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Finding the Fourth Proportional to 18,017.69, 24,872.70 and 13,542.88

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Solution

The fourth proportional to 18,017.69, 24,872.70 and 13,542.88 is: 18,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.69 : 24,872.70 = 13,542.88 : x
  2. Step 2: Convert to fraction form
    18,017.69/24,872.70 = 13,542.88/x
  3. Step 3: Cross multiply
    18,017.69x = 24,872.70 × 13,542.88
  4. Step 4: Simplify right side
    18,017.69x = 336,847,991.38
  5. Step 5: Solve for x
    x = 336,847,991.38/18,017.69
  6. Step 6: Final answer
    x = 18,695.40

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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.