Home / 18,500.14-25,519.80-11,421.52

Finding the Fourth Proportional to 18,500.14, 25,519.80 and 11,421.52

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Solution

The fourth proportional to 18,500.14, 25,519.80 and 11,421.52 is: 15,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.14 : 25,519.80 = 11,421.52 : x
  2. Step 2: Convert to fraction form
    18,500.14/25,519.80 = 11,421.52/x
  3. Step 3: Cross multiply
    18,500.14x = 25,519.80 × 11,421.52
  4. Step 4: Simplify right side
    18,500.14x = 291,474,906.10
  5. Step 5: Solve for x
    x = 291,474,906.10/18,500.14
  6. Step 6: Final answer
    x = 15,755.28

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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.