Home / 20,817.44-28,729.10-12,324.42

Finding the Fourth Proportional to 20,817.44, 28,729.10 and 12,324.42

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Solution

The fourth proportional to 20,817.44, 28,729.10 and 12,324.42 is: 17,008.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.44 : 28,729.10 = 12,324.42 : x
  2. Step 2: Convert to fraction form
    20,817.44/28,729.10 = 12,324.42/x
  3. Step 3: Cross multiply
    20,817.44x = 28,729.10 × 12,324.42
  4. Step 4: Simplify right side
    20,817.44x = 354,069,494.62
  5. Step 5: Solve for x
    x = 354,069,494.62/20,817.44
  6. Step 6: Final answer
    x = 17,008.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.