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Finding the Fourth Proportional to 18,711.53, 25,826.24 and 12,339.27

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Solution

The fourth proportional to 18,711.53, 25,826.24 and 12,339.27 is: 17,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.53 : 25,826.24 = 12,339.27 : x
  2. Step 2: Convert to fraction form
    18,711.53/25,826.24 = 12,339.27/x
  3. Step 3: Cross multiply
    18,711.53x = 25,826.24 × 12,339.27
  4. Step 4: Simplify right side
    18,711.53x = 318,676,850.16
  5. Step 5: Solve for x
    x = 318,676,850.16/18,711.53
  6. Step 6: Final answer
    x = 17,031.04

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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.