Home / 20,776.12-31,145.33-8,293.52

Finding the Fourth Proportional to 20,776.12, 31,145.33 and 8,293.52

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Solution

The fourth proportional to 20,776.12, 31,145.33 and 8,293.52 is: 12,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.12 : 31,145.33 = 8,293.52 : x
  2. Step 2: Convert to fraction form
    20,776.12/31,145.33 = 8,293.52/x
  3. Step 3: Cross multiply
    20,776.12x = 31,145.33 × 8,293.52
  4. Step 4: Simplify right side
    20,776.12x = 258,304,515.86
  5. Step 5: Solve for x
    x = 258,304,515.86/20,776.12
  6. Step 6: Final answer
    x = 12,432.76

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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.