Home / 20,663.20-30,977.38-8,967.61

Finding the Fourth Proportional to 20,663.20, 30,977.38 and 8,967.61

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Solution

The fourth proportional to 20,663.20, 30,977.38 and 8,967.61 is: 13,443.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.20 : 30,977.38 = 8,967.61 : x
  2. Step 2: Convert to fraction form
    20,663.20/30,977.38 = 8,967.61/x
  3. Step 3: Cross multiply
    20,663.20x = 30,977.38 × 8,967.61
  4. Step 4: Simplify right side
    20,663.20x = 277,793,062.66
  5. Step 5: Solve for x
    x = 277,793,062.66/20,663.20
  6. Step 6: Final answer
    x = 13,443.85

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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.