Home / 21,101.46-29,119.14-12,149.88

Finding the Fourth Proportional to 21,101.46, 29,119.14 and 12,149.88

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Solution

The fourth proportional to 21,101.46, 29,119.14 and 12,149.88 is: 16,766.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.46 : 29,119.14 = 12,149.88 : x
  2. Step 2: Convert to fraction form
    21,101.46/29,119.14 = 12,149.88/x
  3. Step 3: Cross multiply
    21,101.46x = 29,119.14 × 12,149.88
  4. Step 4: Simplify right side
    21,101.46x = 353,794,056.70
  5. Step 5: Solve for x
    x = 353,794,056.70/21,101.46
  6. Step 6: Final answer
    x = 16,766.33

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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.