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Finding the Fourth Proportional to 18,126, 25,009.56 and 10,167.48

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Solution

The fourth proportional to 18,126, 25,009.56 and 10,167.48 is: 14,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126 : 25,009.56 = 10,167.48 : x
  2. Step 2: Convert to fraction form
    18,126/25,009.56 = 10,167.48/x
  3. Step 3: Cross multiply
    18,126x = 25,009.56 × 10,167.48
  4. Step 4: Simplify right side
    18,126x = 254,284,201.11
  5. Step 5: Solve for x
    x = 254,284,201.11/18,126
  6. Step 6: Final answer
    x = 14,028.70

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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.