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Finding the Fourth Proportional to 28,754.38, 43,069.21 and 13,932.22

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Solution

The fourth proportional to 28,754.38, 43,069.21 and 13,932.22 is: 20,868.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,754.38 : 43,069.21 = 13,932.22 : x
  2. Step 2: Convert to fraction form
    28,754.38/43,069.21 = 13,932.22/x
  3. Step 3: Cross multiply
    28,754.38x = 43,069.21 × 13,932.22
  4. Step 4: Simplify right side
    28,754.38x = 600,049,445.91
  5. Step 5: Solve for x
    x = 600,049,445.91/28,754.38
  6. Step 6: Final answer
    x = 20,868.11

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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.