Home / 20,386,069.40-28,132,779.78-11,218,712.20

Finding the Fourth Proportional to 20,386,069.40, 28,132,779.78 and 11,218,712.20

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Solution

The fourth proportional to 20,386,069.40, 28,132,779.78 and 11,218,712.20 is: 15,481,825.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,069.40 : 28,132,779.78 = 11,218,712.20 : x
  2. Step 2: Convert to fraction form
    20,386,069.40/28,132,779.78 = 11,218,712.20/x
  3. Step 3: Cross multiply
    20,386,069.40x = 28,132,779.78 × 11,218,712.20
  4. Step 4: Simplify right side
    20,386,069.40x = 315,613,559,737,799.31
  5. Step 5: Solve for x
    x = 315,613,559,737,799.31/20,386,069.40
  6. Step 6: Final answer
    x = 15,481,825.04

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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.