Home / 21,706.30-29,955.24-12,145.87

Finding the Fourth Proportional to 21,706.30, 29,955.24 and 12,145.87

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Solution

The fourth proportional to 21,706.30, 29,955.24 and 12,145.87 is: 16,761.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706.30 : 29,955.24 = 12,145.87 : x
  2. Step 2: Convert to fraction form
    21,706.30/29,955.24 = 12,145.87/x
  3. Step 3: Cross multiply
    21,706.30x = 29,955.24 × 12,145.87
  4. Step 4: Simplify right side
    21,706.30x = 363,832,375.97
  5. Step 5: Solve for x
    x = 363,832,375.97/21,706.30
  6. Step 6: Final answer
    x = 16,761.60

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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.