Home / 21,939.20-32,908.80-6,144.20

Finding the Fourth Proportional to 21,939.20, 32,908.80 and 6,144.20

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Solution

The fourth proportional to 21,939.20, 32,908.80 and 6,144.20 is: 9,216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.20 : 32,908.80 = 6,144.20 : x
  2. Step 2: Convert to fraction form
    21,939.20/32,908.80 = 6,144.20/x
  3. Step 3: Cross multiply
    21,939.20x = 32,908.80 × 6,144.20
  4. Step 4: Simplify right side
    21,939.20x = 202,198,248.96
  5. Step 5: Solve for x
    x = 202,198,248.96/21,939.20
  6. Step 6: Final answer
    x = 9,216.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.