Home / 20,386,062.86-28,132,770.83-11,218,705.61

Finding the Fourth Proportional to 20,386,062.86, 28,132,770.83 and 11,218,705.61

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Solution

The fourth proportional to 20,386,062.86, 28,132,770.83 and 11,218,705.61 is: 15,481,815.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,062.86 : 28,132,770.83 = 11,218,705.61 : x
  2. Step 2: Convert to fraction form
    20,386,062.86/28,132,770.83 = 11,218,705.61/x
  3. Step 3: Cross multiply
    20,386,062.86x = 28,132,770.83 × 11,218,705.61
  4. Step 4: Simplify right side
    20,386,062.86x = 315,613,273,738,608
  5. Step 5: Solve for x
    x = 315,613,273,738,608/20,386,062.86
  6. Step 6: Final answer
    x = 15,481,815.98

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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.