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Finding the Fourth Proportional to 12,539.68, 18,717.96 and 11,626

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Solution

The fourth proportional to 12,539.68, 18,717.96 and 11,626 is: 17,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.68 : 18,717.96 = 11,626 : x
  2. Step 2: Convert to fraction form
    12,539.68/18,717.96 = 11,626/x
  3. Step 3: Cross multiply
    12,539.68x = 18,717.96 × 11,626
  4. Step 4: Simplify right side
    12,539.68x = 217,615,002.96
  5. Step 5: Solve for x
    x = 217,615,002.96/12,539.68
  6. Step 6: Final answer
    x = 17,354.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.