Home / 15,016,789.64-20,721,618.78-9,215,815.88

Finding the Fourth Proportional to 15,016,789.64, 20,721,618.78 and 9,215,815.88

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Solution

The fourth proportional to 15,016,789.64, 20,721,618.78 and 9,215,815.88 is: 12,716,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016,789.64 : 20,721,618.78 = 9,215,815.88 : x
  2. Step 2: Convert to fraction form
    15,016,789.64/20,721,618.78 = 9,215,815.88/x
  3. Step 3: Cross multiply
    15,016,789.64x = 20,721,618.78 × 9,215,815.88
  4. Step 4: Simplify right side
    15,016,789.64x = 190,966,623,412,030.25
  5. Step 5: Solve for x
    x = 190,966,623,412,030.25/15,016,789.64
  6. Step 6: Final answer
    x = 12,716,874.11

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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.