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Finding the Fourth Proportional to 18,120.62, 24,972.60 and 14,135.42

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Solution

The fourth proportional to 18,120.62, 24,972.60 and 14,135.42 is: 19,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.62 : 24,972.60 = 14,135.42 : x
  2. Step 2: Convert to fraction form
    18,120.62/24,972.60 = 14,135.42/x
  3. Step 3: Cross multiply
    18,120.62x = 24,972.60 × 14,135.42
  4. Step 4: Simplify right side
    18,120.62x = 352,998,189.49
  5. Step 5: Solve for x
    x = 352,998,189.49/18,120.62
  6. Step 6: Final answer
    x = 19,480.47

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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.