Home / 12,254.88-18,385.20-3,489.92

Finding the Fourth Proportional to 12,254.88, 18,385.20 and 3,489.92

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Solution

The fourth proportional to 12,254.88, 18,385.20 and 3,489.92 is: 5,235.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.88 : 18,385.20 = 3,489.92 : x
  2. Step 2: Convert to fraction form
    12,254.88/18,385.20 = 3,489.92/x
  3. Step 3: Cross multiply
    12,254.88x = 18,385.20 × 3,489.92
  4. Step 4: Simplify right side
    12,254.88x = 64,162,877.18
  5. Step 5: Solve for x
    x = 64,162,877.18/12,254.88
  6. Step 6: Final answer
    x = 5,235.70

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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.