Home / 42,287.28-63,455.22-18,910.68

Finding the Fourth Proportional to 42,287.28, 63,455.22 and 18,910.68

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Solution

The fourth proportional to 42,287.28, 63,455.22 and 18,910.68 is: 28,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,287.28 : 63,455.22 = 18,910.68 : x
  2. Step 2: Convert to fraction form
    42,287.28/63,455.22 = 18,910.68/x
  3. Step 3: Cross multiply
    42,287.28x = 63,455.22 × 18,910.68
  4. Step 4: Simplify right side
    42,287.28x = 1,199,981,359.75
  5. Step 5: Solve for x
    x = 1,199,981,359.75/42,287.28
  6. Step 6: Final answer
    x = 28,376.89

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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.