Home / 18,121.52-25,002.57-11,748.38

Finding the Fourth Proportional to 18,121.52, 25,002.57 and 11,748.38

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Solution

The fourth proportional to 18,121.52, 25,002.57 and 11,748.38 is: 16,209.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.52 : 25,002.57 = 11,748.38 : x
  2. Step 2: Convert to fraction form
    18,121.52/25,002.57 = 11,748.38/x
  3. Step 3: Cross multiply
    18,121.52x = 25,002.57 × 11,748.38
  4. Step 4: Simplify right side
    18,121.52x = 293,739,612.38
  5. Step 5: Solve for x
    x = 293,739,612.38/18,121.52
  6. Step 6: Final answer
    x = 16,209.43

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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.