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Finding the Fourth Proportional to 18,872.56, 26,044.68 and 10,917.28

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Solution

The fourth proportional to 18,872.56, 26,044.68 and 10,917.28 is: 15,066.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.56 : 26,044.68 = 10,917.28 : x
  2. Step 2: Convert to fraction form
    18,872.56/26,044.68 = 10,917.28/x
  3. Step 3: Cross multiply
    18,872.56x = 26,044.68 × 10,917.28
  4. Step 4: Simplify right side
    18,872.56x = 284,337,064.07
  5. Step 5: Solve for x
    x = 284,337,064.07/18,872.56
  6. Step 6: Final answer
    x = 15,066.16

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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.