Home / 20,386,077.54-28,132,791.12-11,218,720.29

Finding the Fourth Proportional to 20,386,077.54, 28,132,791.12 and 11,218,720.29

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Solution

The fourth proportional to 20,386,077.54, 28,132,791.12 and 11,218,720.29 is: 15,481,836.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,077.54 : 28,132,791.12 = 11,218,720.29 : x
  2. Step 2: Convert to fraction form
    20,386,077.54/28,132,791.12 = 11,218,720.29/x
  3. Step 3: Cross multiply
    20,386,077.54x = 28,132,791.12 × 11,218,720.29
  4. Step 4: Simplify right side
    20,386,077.54x = 315,613,914,552,275.81
  5. Step 5: Solve for x
    x = 315,613,914,552,275.81/20,386,077.54
  6. Step 6: Final answer
    x = 15,481,836.26

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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.