Home / 40,890.66-61,336.20-12,427.88

Finding the Fourth Proportional to 40,890.66, 61,336.20 and 12,427.88

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Solution

The fourth proportional to 40,890.66, 61,336.20 and 12,427.88 is: 18,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,890.66 : 61,336.20 = 12,427.88 : x
  2. Step 2: Convert to fraction form
    40,890.66/61,336.20 = 12,427.88/x
  3. Step 3: Cross multiply
    40,890.66x = 61,336.20 × 12,427.88
  4. Step 4: Simplify right side
    40,890.66x = 762,278,933.26
  5. Step 5: Solve for x
    x = 762,278,933.26/40,890.66
  6. Step 6: Final answer
    x = 18,641.88

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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.