Home / 12,487.04-18,731.10-4,167.80

Finding the Fourth Proportional to 12,487.04, 18,731.10 and 4,167.80

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Solution

The fourth proportional to 12,487.04, 18,731.10 and 4,167.80 is: 6,251.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.04 : 18,731.10 = 4,167.80 : x
  2. Step 2: Convert to fraction form
    12,487.04/18,731.10 = 4,167.80/x
  3. Step 3: Cross multiply
    12,487.04x = 18,731.10 × 4,167.80
  4. Step 4: Simplify right side
    12,487.04x = 78,067,478.58
  5. Step 5: Solve for x
    x = 78,067,478.58/12,487.04
  6. Step 6: Final answer
    x = 6,251.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.