Home / 20,386,061.64-28,132,769.16-11,218,704.40

Finding the Fourth Proportional to 20,386,061.64, 28,132,769.16 and 11,218,704.40

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Solution

The fourth proportional to 20,386,061.64, 28,132,769.16 and 11,218,704.40 is: 15,481,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,061.64 : 28,132,769.16 = 11,218,704.40 : x
  2. Step 2: Convert to fraction form
    20,386,061.64/28,132,769.16 = 11,218,704.40/x
  3. Step 3: Cross multiply
    20,386,061.64x = 28,132,769.16 × 11,218,704.40
  4. Step 4: Simplify right side
    20,386,061.64x = 315,613,221,159,476.31
  5. Step 5: Solve for x
    x = 315,613,221,159,476.31/20,386,061.64
  6. Step 6: Final answer
    x = 15,481,814.33

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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.