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Finding the Fourth Proportional to 23,129.30, 34,669.11 and 9,987.86

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Solution

The fourth proportional to 23,129.30, 34,669.11 and 9,987.86 is: 14,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.30 : 34,669.11 = 9,987.86 : x
  2. Step 2: Convert to fraction form
    23,129.30/34,669.11 = 9,987.86/x
  3. Step 3: Cross multiply
    23,129.30x = 34,669.11 × 9,987.86
  4. Step 4: Simplify right side
    23,129.30x = 346,270,217.00
  5. Step 5: Solve for x
    x = 346,270,217.00/23,129.30
  6. Step 6: Final answer
    x = 14,971.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.