Home / 25,640.30-38,437.05-8,991.15

Finding the Fourth Proportional to 25,640.30, 38,437.05 and 8,991.15

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Solution

The fourth proportional to 25,640.30, 38,437.05 and 8,991.15 is: 13,478.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,640.30 : 38,437.05 = 8,991.15 : x
  2. Step 2: Convert to fraction form
    25,640.30/38,437.05 = 8,991.15/x
  3. Step 3: Cross multiply
    25,640.30x = 38,437.05 × 8,991.15
  4. Step 4: Simplify right side
    25,640.30x = 345,593,282.11
  5. Step 5: Solve for x
    x = 345,593,282.11/25,640.30
  6. Step 6: Final answer
    x = 13,478.52

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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.