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Finding the Fourth Proportional to 18,151.98, 25,052.70 and 12,481.98

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Solution

The fourth proportional to 18,151.98, 25,052.70 and 12,481.98 is: 17,227.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151.98 : 25,052.70 = 12,481.98 : x
  2. Step 2: Convert to fraction form
    18,151.98/25,052.70 = 12,481.98/x
  3. Step 3: Cross multiply
    18,151.98x = 25,052.70 × 12,481.98
  4. Step 4: Simplify right side
    18,151.98x = 312,707,300.35
  5. Step 5: Solve for x
    x = 312,707,300.35/18,151.98
  6. Step 6: Final answer
    x = 17,227.17

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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.