Home / 18,834.09-28,251.13-7,147.31

Finding the Fourth Proportional to 18,834.09, 28,251.13 and 7,147.31

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Solution

The fourth proportional to 18,834.09, 28,251.13 and 7,147.31 is: 10,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.09 : 28,251.13 = 7,147.31 : x
  2. Step 2: Convert to fraction form
    18,834.09/28,251.13 = 7,147.31/x
  3. Step 3: Cross multiply
    18,834.09x = 28,251.13 × 7,147.31
  4. Step 4: Simplify right side
    18,834.09x = 201,919,438.24
  5. Step 5: Solve for x
    x = 201,919,438.24/18,834.09
  6. Step 6: Final answer
    x = 10,720.96

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.