Home / 15,961.12-23,931.25-7,640.87

Finding the Fourth Proportional to 15,961.12, 23,931.25 and 7,640.87

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Solution

The fourth proportional to 15,961.12, 23,931.25 and 7,640.87 is: 11,456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,961.12 : 23,931.25 = 7,640.87 : x
  2. Step 2: Convert to fraction form
    15,961.12/23,931.25 = 7,640.87/x
  3. Step 3: Cross multiply
    15,961.12x = 23,931.25 × 7,640.87
  4. Step 4: Simplify right side
    15,961.12x = 182,855,431.43
  5. Step 5: Solve for x
    x = 182,855,431.43/15,961.12
  6. Step 6: Final answer
    x = 11,456.31

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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.