Home / 21,180.04-29,229.78-12,229.18

Finding the Fourth Proportional to 21,180.04, 29,229.78 and 12,229.18

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Solution

The fourth proportional to 21,180.04, 29,229.78 and 12,229.18 is: 16,877.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.04 : 29,229.78 = 12,229.18 : x
  2. Step 2: Convert to fraction form
    21,180.04/29,229.78 = 12,229.18/x
  3. Step 3: Cross multiply
    21,180.04x = 29,229.78 × 12,229.18
  4. Step 4: Simplify right side
    21,180.04x = 357,456,240.98
  5. Step 5: Solve for x
    x = 357,456,240.98/21,180.04
  6. Step 6: Final answer
    x = 16,877.03

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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.