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Finding the Fourth Proportional to 18,069.75, 24,908.92 and 15,538.30

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Solution

The fourth proportional to 18,069.75, 24,908.92 and 15,538.30 is: 21,419.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,069.75 : 24,908.92 = 15,538.30 : x
  2. Step 2: Convert to fraction form
    18,069.75/24,908.92 = 15,538.30/x
  3. Step 3: Cross multiply
    18,069.75x = 24,908.92 × 15,538.30
  4. Step 4: Simplify right side
    18,069.75x = 387,042,170.52
  5. Step 5: Solve for x
    x = 387,042,170.52/18,069.75
  6. Step 6: Final answer
    x = 21,419.34

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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.