Home / 21,983.13-32,961.33-8,640.14

Finding the Fourth Proportional to 21,983.13, 32,961.33 and 8,640.14

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Solution

The fourth proportional to 21,983.13, 32,961.33 and 8,640.14 is: 12,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.13 : 32,961.33 = 8,640.14 : x
  2. Step 2: Convert to fraction form
    21,983.13/32,961.33 = 8,640.14/x
  3. Step 3: Cross multiply
    21,983.13x = 32,961.33 × 8,640.14
  4. Step 4: Simplify right side
    21,983.13x = 284,790,340.98
  5. Step 5: Solve for x
    x = 284,790,340.98/21,983.13
  6. Step 6: Final answer
    x = 12,954.95

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1.5x scale

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.