Home / 42,187.60-63,312.52-20,000.88

Finding the Fourth Proportional to 42,187.60, 63,312.52 and 20,000.88

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Solution

The fourth proportional to 42,187.60, 63,312.52 and 20,000.88 is: 30,016.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,187.60 : 63,312.52 = 20,000.88 : x
  2. Step 2: Convert to fraction form
    42,187.60/63,312.52 = 20,000.88/x
  3. Step 3: Cross multiply
    42,187.60x = 63,312.52 × 20,000.88
  4. Step 4: Simplify right side
    42,187.60x = 1,266,306,115.02
  5. Step 5: Solve for x
    x = 1,266,306,115.02/42,187.60
  6. Step 6: Final answer
    x = 30,016.07

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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.