Home / 21,004,585,400.19-28,986,415,184.39-11,359,315,369.29

Finding the Fourth Proportional to 21,004,585,400.19, 28,986,415,184.39 and 11,359,315,369.29

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Solution

The fourth proportional to 21,004,585,400.19, 28,986,415,184.39 and 11,359,315,369.29 is: 15,675,902,438.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,585,400.19 : 28,986,415,184.39 = 11,359,315,369.29 : x
  2. Step 2: Convert to fraction form
    21,004,585,400.19/28,986,415,184.39 = 11,359,315,369.29/x
  3. Step 3: Cross multiply
    21,004,585,400.19x = 28,986,415,184.39 × 11,359,315,369.29
  4. Step 4: Simplify right side
    21,004,585,400.19x = 329,265,831,504,605,544,448
  5. Step 5: Solve for x
    x = 329,265,831,504,605,544,448/21,004,585,400.19
  6. Step 6: Final answer
    x = 15,675,902,438.98

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.