Home / 21,712.40-32,572.20-8,565.20

Finding the Fourth Proportional to 21,712.40, 32,572.20 and 8,565.20

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Solution

The fourth proportional to 21,712.40, 32,572.20 and 8,565.20 is: 12,849.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.40 : 32,572.20 = 8,565.20 : x
  2. Step 2: Convert to fraction form
    21,712.40/32,572.20 = 8,565.20/x
  3. Step 3: Cross multiply
    21,712.40x = 32,572.20 × 8,565.20
  4. Step 4: Simplify right side
    21,712.40x = 278,987,407.44
  5. Step 5: Solve for x
    x = 278,987,407.44/21,712.40
  6. Step 6: Final answer
    x = 12,849.22

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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.