Home / 15,665.28-21,618.72-8,952

Finding the Fourth Proportional to 15,665.28, 21,618.72 and 8,952

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Solution

The fourth proportional to 15,665.28, 21,618.72 and 8,952 is: 12,354.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.28 : 21,618.72 = 8,952 : x
  2. Step 2: Convert to fraction form
    15,665.28/21,618.72 = 8,952/x
  3. Step 3: Cross multiply
    15,665.28x = 21,618.72 × 8,952
  4. Step 4: Simplify right side
    15,665.28x = 193,530,781.44
  5. Step 5: Solve for x
    x = 193,530,781.44/15,665.28
  6. Step 6: Final answer
    x = 12,354.12

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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.