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Finding the Fourth Proportional to 13,760.74, 20,525.42 and 12,499.41

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Solution

The fourth proportional to 13,760.74, 20,525.42 and 12,499.41 is: 18,644.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.74 : 20,525.42 = 12,499.41 : x
  2. Step 2: Convert to fraction form
    13,760.74/20,525.42 = 12,499.41/x
  3. Step 3: Cross multiply
    13,760.74x = 20,525.42 × 12,499.41
  4. Step 4: Simplify right side
    13,760.74x = 256,555,677.91
  5. Step 5: Solve for x
    x = 256,555,677.91/13,760.74
  6. Step 6: Final answer
    x = 18,644.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.