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Finding the Fourth Proportional to 18,178.68, 25,086.13 and 10,220.91

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Solution

The fourth proportional to 18,178.68, 25,086.13 and 10,220.91 is: 14,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.68 : 25,086.13 = 10,220.91 : x
  2. Step 2: Convert to fraction form
    18,178.68/25,086.13 = 10,220.91/x
  3. Step 3: Cross multiply
    18,178.68x = 25,086.13 × 10,220.91
  4. Step 4: Simplify right side
    18,178.68x = 256,403,076.98
  5. Step 5: Solve for x
    x = 256,403,076.98/18,178.68
  6. Step 6: Final answer
    x = 14,104.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.