Home / 42,140.20-63,213.56-12,555.76

Finding the Fourth Proportional to 42,140.20, 63,213.56 and 12,555.76

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Solution

The fourth proportional to 42,140.20, 63,213.56 and 12,555.76 is: 18,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,140.20 : 63,213.56 = 12,555.76 : x
  2. Step 2: Convert to fraction form
    42,140.20/63,213.56 = 12,555.76/x
  3. Step 3: Cross multiply
    42,140.20x = 63,213.56 × 12,555.76
  4. Step 4: Simplify right side
    42,140.20x = 793,694,288.11
  5. Step 5: Solve for x
    x = 793,694,288.11/42,140.20
  6. Step 6: Final answer
    x = 18,834.61

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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.