Home / 21,519.65-32,279.48-8,381.25

Finding the Fourth Proportional to 21,519.65, 32,279.48 and 8,381.25

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Solution

The fourth proportional to 21,519.65, 32,279.48 and 8,381.25 is: 12,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,519.65 : 32,279.48 = 8,381.25 : x
  2. Step 2: Convert to fraction form
    21,519.65/32,279.48 = 8,381.25/x
  3. Step 3: Cross multiply
    21,519.65x = 32,279.48 × 8,381.25
  4. Step 4: Simplify right side
    21,519.65x = 270,542,391.75
  5. Step 5: Solve for x
    x = 270,542,391.75/21,519.65
  6. Step 6: Final answer
    x = 12,571.88

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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.