Home / 42,327.36-63,520.20-18,979.92

Finding the Fourth Proportional to 42,327.36, 63,520.20 and 18,979.92

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Solution

The fourth proportional to 42,327.36, 63,520.20 and 18,979.92 is: 28,482.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,327.36 : 63,520.20 = 18,979.92 : x
  2. Step 2: Convert to fraction form
    42,327.36/63,520.20 = 18,979.92/x
  3. Step 3: Cross multiply
    42,327.36x = 63,520.20 × 18,979.92
  4. Step 4: Simplify right side
    42,327.36x = 1,205,608,314.38
  5. Step 5: Solve for x
    x = 1,205,608,314.38/42,327.36
  6. Step 6: Final answer
    x = 28,482.96

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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.