Home / 13,428,301.26-20,128,109.13-7,658,612.94

Finding the Fourth Proportional to 13,428,301.26, 20,128,109.13 and 7,658,612.94

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Solution

The fourth proportional to 13,428,301.26, 20,128,109.13 and 7,658,612.94 is: 11,479,739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,301.26 : 20,128,109.13 = 7,658,612.94 : x
  2. Step 2: Convert to fraction form
    13,428,301.26/20,128,109.13 = 7,658,612.94/x
  3. Step 3: Cross multiply
    13,428,301.26x = 20,128,109.13 × 7,658,612.94
  4. Step 4: Simplify right side
    13,428,301.26x = 154,153,397,040,750.16
  5. Step 5: Solve for x
    x = 154,153,397,040,750.16/13,428,301.26
  6. Step 6: Final answer
    x = 11,479,739.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.