Home / 21,451.38-32,175.50-6,659.90

Finding the Fourth Proportional to 21,451.38, 32,175.50 and 6,659.90

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Solution

The fourth proportional to 21,451.38, 32,175.50 and 6,659.90 is: 9,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.38 : 32,175.50 = 6,659.90 : x
  2. Step 2: Convert to fraction form
    21,451.38/32,175.50 = 6,659.90/x
  3. Step 3: Cross multiply
    21,451.38x = 32,175.50 × 6,659.90
  4. Step 4: Simplify right side
    21,451.38x = 214,285,612.45
  5. Step 5: Solve for x
    x = 214,285,612.45/21,451.38
  6. Step 6: Final answer
    x = 9,989.36

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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.