Home / 18,613.28-27,882.20-8,603.80

Finding the Fourth Proportional to 18,613.28, 27,882.20 and 8,603.80

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Solution

The fourth proportional to 18,613.28, 27,882.20 and 8,603.80 is: 12,888.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.28 : 27,882.20 = 8,603.80 : x
  2. Step 2: Convert to fraction form
    18,613.28/27,882.20 = 8,603.80/x
  3. Step 3: Cross multiply
    18,613.28x = 27,882.20 × 8,603.80
  4. Step 4: Simplify right side
    18,613.28x = 239,892,872.36
  5. Step 5: Solve for x
    x = 239,892,872.36/18,613.28
  6. Step 6: Final answer
    x = 12,888.26

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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.