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Finding the Fourth Proportional to 18,773.64, 25,908.42 and 10,390.14

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Solution

The fourth proportional to 18,773.64, 25,908.42 and 10,390.14 is: 14,338.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.64 : 25,908.42 = 10,390.14 : x
  2. Step 2: Convert to fraction form
    18,773.64/25,908.42 = 10,390.14/x
  3. Step 3: Cross multiply
    18,773.64x = 25,908.42 × 10,390.14
  4. Step 4: Simplify right side
    18,773.64x = 269,192,110.98
  5. Step 5: Solve for x
    x = 269,192,110.98/18,773.64
  6. Step 6: Final answer
    x = 14,338.83

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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.