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Finding the Fourth Proportional to 18,300, 25,251.13 and 10,644.97

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Solution

The fourth proportional to 18,300, 25,251.13 and 10,644.97 is: 14,688.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300 : 25,251.13 = 10,644.97 : x
  2. Step 2: Convert to fraction form
    18,300/25,251.13 = 10,644.97/x
  3. Step 3: Cross multiply
    18,300x = 25,251.13 × 10,644.97
  4. Step 4: Simplify right side
    18,300x = 268,797,521.32
  5. Step 5: Solve for x
    x = 268,797,521.32/18,300
  6. Step 6: Final answer
    x = 14,688.39

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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.