Home / 21,660.80-29,888.53-12,229.16

Finding the Fourth Proportional to 21,660.80, 29,888.53 and 12,229.16

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Solution

The fourth proportional to 21,660.80, 29,888.53 and 12,229.16 is: 16,874.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.80 : 29,888.53 = 12,229.16 : x
  2. Step 2: Convert to fraction form
    21,660.80/29,888.53 = 12,229.16/x
  3. Step 3: Cross multiply
    21,660.80x = 29,888.53 × 12,229.16
  4. Step 4: Simplify right side
    21,660.80x = 365,511,435.52
  5. Step 5: Solve for x
    x = 365,511,435.52/21,660.80
  6. Step 6: Final answer
    x = 16,874.33

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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.