Home / 21,445.60-32,171.46-8,123.48

Finding the Fourth Proportional to 21,445.60, 32,171.46 and 8,123.48

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Solution

The fourth proportional to 21,445.60, 32,171.46 and 8,123.48 is: 12,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,445.60 : 32,171.46 = 8,123.48 : x
  2. Step 2: Convert to fraction form
    21,445.60/32,171.46 = 8,123.48/x
  3. Step 3: Cross multiply
    21,445.60x = 32,171.46 × 8,123.48
  4. Step 4: Simplify right side
    21,445.60x = 261,344,211.88
  5. Step 5: Solve for x
    x = 261,344,211.88/21,445.60
  6. Step 6: Final answer
    x = 12,186.38

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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.