Home / 15,951.66-21,998.07-12,168.18

Finding the Fourth Proportional to 15,951.66, 21,998.07 and 12,168.18

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Solution

The fourth proportional to 15,951.66, 21,998.07 and 12,168.18 is: 16,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951.66 : 21,998.07 = 12,168.18 : x
  2. Step 2: Convert to fraction form
    15,951.66/21,998.07 = 12,168.18/x
  3. Step 3: Cross multiply
    15,951.66x = 21,998.07 × 12,168.18
  4. Step 4: Simplify right side
    15,951.66x = 267,676,475.41
  5. Step 5: Solve for x
    x = 267,676,475.41/15,951.66
  6. Step 6: Final answer
    x = 16,780.48

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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.