Home / 20,764.25-31,159.34-8,452.25

Finding the Fourth Proportional to 20,764.25, 31,159.34 and 8,452.25

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Solution

The fourth proportional to 20,764.25, 31,159.34 and 8,452.25 is: 12,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.25 : 31,159.34 = 8,452.25 : x
  2. Step 2: Convert to fraction form
    20,764.25/31,159.34 = 8,452.25/x
  3. Step 3: Cross multiply
    20,764.25x = 31,159.34 × 8,452.25
  4. Step 4: Simplify right side
    20,764.25x = 263,366,489.25
  5. Step 5: Solve for x
    x = 263,366,489.25/20,764.25
  6. Step 6: Final answer
    x = 12,683.65

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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.