Home / 21,618.28-32,445.84-8,479.80

Finding the Fourth Proportional to 21,618.28, 32,445.84 and 8,479.80

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Solution

The fourth proportional to 21,618.28, 32,445.84 and 8,479.80 is: 12,726.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.28 : 32,445.84 = 8,479.80 : x
  2. Step 2: Convert to fraction form
    21,618.28/32,445.84 = 8,479.80/x
  3. Step 3: Cross multiply
    21,618.28x = 32,445.84 × 8,479.80
  4. Step 4: Simplify right side
    21,618.28x = 275,134,234.03
  5. Step 5: Solve for x
    x = 275,134,234.03/21,618.28
  6. Step 6: Final answer
    x = 12,726.93

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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.