Home / 20,386,076.04-28,132,789.05-11,218,718.79

Finding the Fourth Proportional to 20,386,076.04, 28,132,789.05 and 11,218,718.79

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Solution

The fourth proportional to 20,386,076.04, 28,132,789.05 and 11,218,718.79 is: 15,481,834.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,076.04 : 28,132,789.05 = 11,218,718.79 : x
  2. Step 2: Convert to fraction form
    20,386,076.04/28,132,789.05 = 11,218,718.79/x
  3. Step 3: Cross multiply
    20,386,076.04x = 28,132,789.05 × 11,218,718.79
  4. Step 4: Simplify right side
    20,386,076.04x = 315,613,849,130,341.25
  5. Step 5: Solve for x
    x = 315,613,849,130,341.25/20,386,076.04
  6. Step 6: Final answer
    x = 15,481,834.19

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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.