Home / 21,451.60-32,175.60-6,660.28

Finding the Fourth Proportional to 21,451.60, 32,175.60 and 6,660.28

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Solution

The fourth proportional to 21,451.60, 32,175.60 and 6,660.28 is: 9,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.60 : 32,175.60 = 6,660.28 : x
  2. Step 2: Convert to fraction form
    21,451.60/32,175.60 = 6,660.28/x
  3. Step 3: Cross multiply
    21,451.60x = 32,175.60 × 6,660.28
  4. Step 4: Simplify right side
    21,451.60x = 214,298,505.17
  5. Step 5: Solve for x
    x = 214,298,505.17/21,451.60
  6. Step 6: Final answer
    x = 9,989.86

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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.