Home / 21,004,585,528.08-28,986,415,360.47-11,359,315,497.12

Finding the Fourth Proportional to 21,004,585,528.08, 28,986,415,360.47 and 11,359,315,497.12

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Solution

The fourth proportional to 21,004,585,528.08, 28,986,415,360.47 and 11,359,315,497.12 is: 15,675,902,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,585,528.08 : 28,986,415,360.47 = 11,359,315,497.12 : x
  2. Step 2: Convert to fraction form
    21,004,585,528.08/28,986,415,360.47 = 11,359,315,497.12/x
  3. Step 3: Cross multiply
    21,004,585,528.08x = 28,986,415,360.47 × 11,359,315,497.12
  4. Step 4: Simplify right side
    21,004,585,528.08x = 329,265,837,210,144,145,408
  5. Step 5: Solve for x
    x = 329,265,837,210,144,145,408/21,004,585,528.08
  6. Step 6: Final answer
    x = 15,675,902,615.17

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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.