Home / 18,644.85-25,745.45-12,385.17

Finding the Fourth Proportional to 18,644.85, 25,745.45 and 12,385.17

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Solution

The fourth proportional to 18,644.85, 25,745.45 and 12,385.17 is: 17,101.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.85 : 25,745.45 = 12,385.17 : x
  2. Step 2: Convert to fraction form
    18,644.85/25,745.45 = 12,385.17/x
  3. Step 3: Cross multiply
    18,644.85x = 25,745.45 × 12,385.17
  4. Step 4: Simplify right side
    18,644.85x = 318,861,713.05
  5. Step 5: Solve for x
    x = 318,861,713.05/18,644.85
  6. Step 6: Final answer
    x = 17,101.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.