Home / 42,143.88-63,215.79-12,560.96

Finding the Fourth Proportional to 42,143.88, 63,215.79 and 12,560.96

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Solution

The fourth proportional to 42,143.88, 63,215.79 and 12,560.96 is: 18,841.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,143.88 : 63,215.79 = 12,560.96 : x
  2. Step 2: Convert to fraction form
    42,143.88/63,215.79 = 12,560.96/x
  3. Step 3: Cross multiply
    42,143.88x = 63,215.79 × 12,560.96
  4. Step 4: Simplify right side
    42,143.88x = 794,050,693.48
  5. Step 5: Solve for x
    x = 794,050,693.48/42,143.88
  6. Step 6: Final answer
    x = 18,841.42

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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.