Home / 42,168.96-63,251.28-12,587.04

Finding the Fourth Proportional to 42,168.96, 63,251.28 and 12,587.04

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Solution

The fourth proportional to 42,168.96, 63,251.28 and 12,587.04 is: 18,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,168.96 : 63,251.28 = 12,587.04 : x
  2. Step 2: Convert to fraction form
    42,168.96/63,251.28 = 12,587.04/x
  3. Step 3: Cross multiply
    42,168.96x = 63,251.28 × 12,587.04
  4. Step 4: Simplify right side
    42,168.96x = 796,146,391.41
  5. Step 5: Solve for x
    x = 796,146,391.41/42,168.96
  6. Step 6: Final answer
    x = 18,879.92

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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.