Home / 21,540.15-32,321.16-12,668.22

Finding the Fourth Proportional to 21,540.15, 32,321.16 and 12,668.22

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Solution

The fourth proportional to 21,540.15, 32,321.16 and 12,668.22 is: 19,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.15 : 32,321.16 = 12,668.22 : x
  2. Step 2: Convert to fraction form
    21,540.15/32,321.16 = 12,668.22/x
  3. Step 3: Cross multiply
    21,540.15x = 32,321.16 × 12,668.22
  4. Step 4: Simplify right side
    21,540.15x = 409,451,565.54
  5. Step 5: Solve for x
    x = 409,451,565.54/21,540.15
  6. Step 6: Final answer
    x = 19,008.76

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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.