Home / 20,676.52-31,014.77-8,989.73

Finding the Fourth Proportional to 20,676.52, 31,014.77 and 8,989.73

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Solution

The fourth proportional to 20,676.52, 31,014.77 and 8,989.73 is: 13,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.52 : 31,014.77 = 8,989.73 : x
  2. Step 2: Convert to fraction form
    20,676.52/31,014.77 = 8,989.73/x
  3. Step 3: Cross multiply
    20,676.52x = 31,014.77 × 8,989.73
  4. Step 4: Simplify right side
    20,676.52x = 278,814,574.90
  5. Step 5: Solve for x
    x = 278,814,574.90/20,676.52
  6. Step 6: Final answer
    x = 13,484.60

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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.