Home / 18,633.30-25,711.11-11,079.48

Finding the Fourth Proportional to 18,633.30, 25,711.11 and 11,079.48

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Solution

The fourth proportional to 18,633.30, 25,711.11 and 11,079.48 is: 15,287.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.30 : 25,711.11 = 11,079.48 : x
  2. Step 2: Convert to fraction form
    18,633.30/25,711.11 = 11,079.48/x
  3. Step 3: Cross multiply
    18,633.30x = 25,711.11 × 11,079.48
  4. Step 4: Simplify right side
    18,633.30x = 284,865,729.02
  5. Step 5: Solve for x
    x = 284,865,729.02/18,633.30
  6. Step 6: Final answer
    x = 15,287.99

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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.