Home / 21,722.16-32,585.82-7,679.30

Finding the Fourth Proportional to 21,722.16, 32,585.82 and 7,679.30

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Solution

The fourth proportional to 21,722.16, 32,585.82 and 7,679.30 is: 11,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.16 : 32,585.82 = 7,679.30 : x
  2. Step 2: Convert to fraction form
    21,722.16/32,585.82 = 7,679.30/x
  3. Step 3: Cross multiply
    21,722.16x = 32,585.82 × 7,679.30
  4. Step 4: Simplify right side
    21,722.16x = 250,236,124.60
  5. Step 5: Solve for x
    x = 250,236,124.60/21,722.16
  6. Step 6: Final answer
    x = 11,519.85

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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.