Home / 21,232.16-31,846.62-8,749

Finding the Fourth Proportional to 21,232.16, 31,846.62 and 8,749

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Solution

The fourth proportional to 21,232.16, 31,846.62 and 8,749 is: 13,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.16 : 31,846.62 = 8,749 : x
  2. Step 2: Convert to fraction form
    21,232.16/31,846.62 = 8,749/x
  3. Step 3: Cross multiply
    21,232.16x = 31,846.62 × 8,749
  4. Step 4: Simplify right side
    21,232.16x = 278,626,078.38
  5. Step 5: Solve for x
    x = 278,626,078.38/21,232.16
  6. Step 6: Final answer
    x = 13,122.83

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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.