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Finding the Fourth Proportional to 18,773.88, 25,908.76 and 10,390.38

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Solution

The fourth proportional to 18,773.88, 25,908.76 and 10,390.38 is: 14,339.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.88 : 25,908.76 = 10,390.38 : x
  2. Step 2: Convert to fraction form
    18,773.88/25,908.76 = 10,390.38/x
  3. Step 3: Cross multiply
    18,773.88x = 25,908.76 × 10,390.38
  4. Step 4: Simplify right side
    18,773.88x = 269,201,861.73
  5. Step 5: Solve for x
    x = 269,201,861.73/18,773.88
  6. Step 6: Final answer
    x = 14,339.17

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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.