Home / 18,763.62-25,882.52-12,390.27

Finding the Fourth Proportional to 18,763.62, 25,882.52 and 12,390.27

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Solution

The fourth proportional to 18,763.62, 25,882.52 and 12,390.27 is: 17,091.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.62 : 25,882.52 = 12,390.27 : x
  2. Step 2: Convert to fraction form
    18,763.62/25,882.52 = 12,390.27/x
  3. Step 3: Cross multiply
    18,763.62x = 25,882.52 × 12,390.27
  4. Step 4: Simplify right side
    18,763.62x = 320,691,349.13
  5. Step 5: Solve for x
    x = 320,691,349.13/18,763.62
  6. Step 6: Final answer
    x = 17,091.12

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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.