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Finding the Fourth Proportional to 42,560.76, 63,811.52 and 18,855.44

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Solution

The fourth proportional to 42,560.76, 63,811.52 and 18,855.44 is: 28,270.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,560.76 : 63,811.52 = 18,855.44 : x
  2. Step 2: Convert to fraction form
    42,560.76/63,811.52 = 18,855.44/x
  3. Step 3: Cross multiply
    42,560.76x = 63,811.52 × 18,855.44
  4. Step 4: Simplify right side
    42,560.76x = 1,203,194,286.67
  5. Step 5: Solve for x
    x = 1,203,194,286.67/42,560.76
  6. Step 6: Final answer
    x = 28,270.04

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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.