Home / 21,576.30-29,772.54-12,143.04

Finding the Fourth Proportional to 21,576.30, 29,772.54 and 12,143.04

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Solution

The fourth proportional to 21,576.30, 29,772.54 and 12,143.04 is: 16,755.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,576.30 : 29,772.54 = 12,143.04 : x
  2. Step 2: Convert to fraction form
    21,576.30/29,772.54 = 12,143.04/x
  3. Step 3: Cross multiply
    21,576.30x = 29,772.54 × 12,143.04
  4. Step 4: Simplify right side
    21,576.30x = 361,529,144.12
  5. Step 5: Solve for x
    x = 361,529,144.12/21,576.30
  6. Step 6: Final answer
    x = 16,755.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.