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Finding the Fourth Proportional to 18,103.62, 24,979.95 and 10,146.18

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Solution

The fourth proportional to 18,103.62, 24,979.95 and 10,146.18 is: 14,000.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.62 : 24,979.95 = 10,146.18 : x
  2. Step 2: Convert to fraction form
    18,103.62/24,979.95 = 10,146.18/x
  3. Step 3: Cross multiply
    18,103.62x = 24,979.95 × 10,146.18
  4. Step 4: Simplify right side
    18,103.62x = 253,451,069.09
  5. Step 5: Solve for x
    x = 253,451,069.09/18,103.62
  6. Step 6: Final answer
    x = 14,000.02

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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.