Home / 21,731.73-29,982.76-12,170.18

Finding the Fourth Proportional to 21,731.73, 29,982.76 and 12,170.18

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Solution

The fourth proportional to 21,731.73, 29,982.76 and 12,170.18 is: 16,790.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,731.73 : 29,982.76 = 12,170.18 : x
  2. Step 2: Convert to fraction form
    21,731.73/29,982.76 = 12,170.18/x
  3. Step 3: Cross multiply
    21,731.73x = 29,982.76 × 12,170.18
  4. Step 4: Simplify right side
    21,731.73x = 364,895,630.63
  5. Step 5: Solve for x
    x = 364,895,630.63/21,731.73
  6. Step 6: Final answer
    x = 16,790.92

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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.