Home / 25,715.82-38,578.05-8,191.02

Finding the Fourth Proportional to 25,715.82, 38,578.05 and 8,191.02

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Solution

The fourth proportional to 25,715.82, 38,578.05 and 8,191.02 is: 12,287.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,715.82 : 38,578.05 = 8,191.02 : x
  2. Step 2: Convert to fraction form
    25,715.82/38,578.05 = 8,191.02/x
  3. Step 3: Cross multiply
    25,715.82x = 38,578.05 × 8,191.02
  4. Step 4: Simplify right side
    25,715.82x = 315,993,579.11
  5. Step 5: Solve for x
    x = 315,993,579.11/25,715.82
  6. Step 6: Final answer
    x = 12,287.91

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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.