Home / 20,677.22-30,991.45-9,996.92

Finding the Fourth Proportional to 20,677.22, 30,991.45 and 9,996.92

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Solution

The fourth proportional to 20,677.22, 30,991.45 and 9,996.92 is: 14,983.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.22 : 30,991.45 = 9,996.92 : x
  2. Step 2: Convert to fraction form
    20,677.22/30,991.45 = 9,996.92/x
  3. Step 3: Cross multiply
    20,677.22x = 30,991.45 × 9,996.92
  4. Step 4: Simplify right side
    20,677.22x = 309,818,891.38
  5. Step 5: Solve for x
    x = 309,818,891.38/20,677.22
  6. Step 6: Final answer
    x = 14,983.59

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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.