Home / 38,432.24-57,643.40-12,139.60

Finding the Fourth Proportional to 38,432.24, 57,643.40 and 12,139.60

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Solution

The fourth proportional to 38,432.24, 57,643.40 and 12,139.60 is: 18,207.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,432.24 : 57,643.40 = 12,139.60 : x
  2. Step 2: Convert to fraction form
    38,432.24/57,643.40 = 12,139.60/x
  3. Step 3: Cross multiply
    38,432.24x = 57,643.40 × 12,139.60
  4. Step 4: Simplify right side
    38,432.24x = 699,767,818.64
  5. Step 5: Solve for x
    x = 699,767,818.64/38,432.24
  6. Step 6: Final answer
    x = 18,207.83

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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.