Home / 20,863.72-31,296.66-5,281.48

Finding the Fourth Proportional to 20,863.72, 31,296.66 and 5,281.48

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Solution

The fourth proportional to 20,863.72, 31,296.66 and 5,281.48 is: 7,922.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.72 : 31,296.66 = 5,281.48 : x
  2. Step 2: Convert to fraction form
    20,863.72/31,296.66 = 5,281.48/x
  3. Step 3: Cross multiply
    20,863.72x = 31,296.66 × 5,281.48
  4. Step 4: Simplify right side
    20,863.72x = 165,292,683.86
  5. Step 5: Solve for x
    x = 165,292,683.86/20,863.72
  6. Step 6: Final answer
    x = 7,922.49

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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.