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Finding the Fourth Proportional to 15,855.31, 23,781.06 and 4,169.44

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Solution

The fourth proportional to 15,855.31, 23,781.06 and 4,169.44 is: 6,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,855.31 : 23,781.06 = 4,169.44 : x
  2. Step 2: Convert to fraction form
    15,855.31/23,781.06 = 4,169.44/x
  3. Step 3: Cross multiply
    15,855.31x = 23,781.06 × 4,169.44
  4. Step 4: Simplify right side
    15,855.31x = 99,153,583.90
  5. Step 5: Solve for x
    x = 99,153,583.90/15,855.31
  6. Step 6: Final answer
    x = 6,253.65

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1.5x scale

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.