Home / 42,672.91-63,988.90-20,164.85

Finding the Fourth Proportional to 42,672.91, 63,988.90 and 20,164.85

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Solution

The fourth proportional to 42,672.91, 63,988.90 and 20,164.85 is: 30,237.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,672.91 : 63,988.90 = 20,164.85 : x
  2. Step 2: Convert to fraction form
    42,672.91/63,988.90 = 20,164.85/x
  3. Step 3: Cross multiply
    42,672.91x = 63,988.90 × 20,164.85
  4. Step 4: Simplify right side
    42,672.91x = 1,290,326,735.62
  5. Step 5: Solve for x
    x = 1,290,326,735.62/42,672.91
  6. Step 6: Final answer
    x = 30,237.61

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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.