Home / 25,631.22-38,447.12-8,991.66

Finding the Fourth Proportional to 25,631.22, 38,447.12 and 8,991.66

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Solution

The fourth proportional to 25,631.22, 38,447.12 and 8,991.66 is: 13,487.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,631.22 : 38,447.12 = 8,991.66 : x
  2. Step 2: Convert to fraction form
    25,631.22/38,447.12 = 8,991.66/x
  3. Step 3: Cross multiply
    25,631.22x = 38,447.12 × 8,991.66
  4. Step 4: Simplify right side
    25,631.22x = 345,703,431.02
  5. Step 5: Solve for x
    x = 345,703,431.02/25,631.22
  6. Step 6: Final answer
    x = 13,487.59

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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.