Home / 20,799.18-31,176.27-8,305.47

Finding the Fourth Proportional to 20,799.18, 31,176.27 and 8,305.47

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Solution

The fourth proportional to 20,799.18, 31,176.27 and 8,305.47 is: 12,449.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.18 : 31,176.27 = 8,305.47 : x
  2. Step 2: Convert to fraction form
    20,799.18/31,176.27 = 8,305.47/x
  3. Step 3: Cross multiply
    20,799.18x = 31,176.27 × 8,305.47
  4. Step 4: Simplify right side
    20,799.18x = 258,933,575.20
  5. Step 5: Solve for x
    x = 258,933,575.20/20,799.18
  6. Step 6: Final answer
    x = 12,449.22

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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.