Home / 13,561,380.72-18,719,616.24-8,979,178.32

Finding the Fourth Proportional to 13,561,380.72, 18,719,616.24 and 8,979,178.32

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Solution

The fourth proportional to 13,561,380.72, 18,719,616.24 and 8,979,178.32 is: 12,394,517.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561,380.72 : 18,719,616.24 = 8,979,178.32 : x
  2. Step 2: Convert to fraction form
    13,561,380.72/18,719,616.24 = 8,979,178.32/x
  3. Step 3: Cross multiply
    13,561,380.72x = 18,719,616.24 × 8,979,178.32
  4. Step 4: Simplify right side
    13,561,380.72x = 168,086,772,300,927.91
  5. Step 5: Solve for x
    x = 168,086,772,300,927.91/13,561,380.72
  6. Step 6: Final answer
    x = 12,394,517.62

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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.