Home / 20,867.48-31,301.22-5,286.32

Finding the Fourth Proportional to 20,867.48, 31,301.22 and 5,286.32

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Solution

The fourth proportional to 20,867.48, 31,301.22 and 5,286.32 is: 7,929.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.48 : 31,301.22 = 5,286.32 : x
  2. Step 2: Convert to fraction form
    20,867.48/31,301.22 = 5,286.32/x
  3. Step 3: Cross multiply
    20,867.48x = 31,301.22 × 5,286.32
  4. Step 4: Simplify right side
    20,867.48x = 165,468,265.31
  5. Step 5: Solve for x
    x = 165,468,265.31/20,867.48
  6. Step 6: Final answer
    x = 7,929.48

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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.