Home / 42,179.60-63,249.92-12,589.76

Finding the Fourth Proportional to 42,179.60, 63,249.92 and 12,589.76

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Solution

The fourth proportional to 42,179.60, 63,249.92 and 12,589.76 is: 18,878.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,179.60 : 63,249.92 = 12,589.76 : x
  2. Step 2: Convert to fraction form
    42,179.60/63,249.92 = 12,589.76/x
  3. Step 3: Cross multiply
    42,179.60x = 63,249.92 × 12,589.76
  4. Step 4: Simplify right side
    42,179.60x = 796,301,312.82
  5. Step 5: Solve for x
    x = 796,301,312.82/42,179.60
  6. Step 6: Final answer
    x = 18,878.83

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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.