Home / 13,291,387.38-18,342,130.95-7,179,815.88

Finding the Fourth Proportional to 13,291,387.38, 18,342,130.95 and 7,179,815.88

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Solution

The fourth proportional to 13,291,387.38, 18,342,130.95 and 7,179,815.88 is: 9,908,154.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,387.38 : 18,342,130.95 = 7,179,815.88 : x
  2. Step 2: Convert to fraction form
    13,291,387.38/18,342,130.95 = 7,179,815.88/x
  3. Step 3: Cross multiply
    13,291,387.38x = 18,342,130.95 × 7,179,815.88
  4. Step 4: Simplify right side
    13,291,387.38x = 131,693,123,067,849.48
  5. Step 5: Solve for x
    x = 131,693,123,067,849.48/13,291,387.38
  6. Step 6: Final answer
    x = 9,908,154.75

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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.