Home / 20,386,070.40-28,132,781.16-11,218,713.20

Finding the Fourth Proportional to 20,386,070.40, 28,132,781.16 and 11,218,713.20

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Solution

The fourth proportional to 20,386,070.40, 28,132,781.16 and 11,218,713.20 is: 15,481,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,070.40 : 28,132,781.16 = 11,218,713.20 : x
  2. Step 2: Convert to fraction form
    20,386,070.40/28,132,781.16 = 11,218,713.20/x
  3. Step 3: Cross multiply
    20,386,070.40x = 28,132,781.16 × 11,218,713.20
  4. Step 4: Simplify right side
    20,386,070.40x = 315,613,603,352,403.31
  5. Step 5: Solve for x
    x = 315,613,603,352,403.31/20,386,070.40
  6. Step 6: Final answer
    x = 15,481,826.42

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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.