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Finding the Fourth Proportional to 18,462.38, 25,478.08 and 10,078.88

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Solution

The fourth proportional to 18,462.38, 25,478.08 and 10,078.88 is: 13,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.38 : 25,478.08 = 10,078.88 : x
  2. Step 2: Convert to fraction form
    18,462.38/25,478.08 = 10,078.88/x
  3. Step 3: Cross multiply
    18,462.38x = 25,478.08 × 10,078.88
  4. Step 4: Simplify right side
    18,462.38x = 256,790,358.36
  5. Step 5: Solve for x
    x = 256,790,358.36/18,462.38
  6. Step 6: Final answer
    x = 13,908.85

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1.5x scale

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.