Home / 20,949.45-31,419.77-6,154.35

Finding the Fourth Proportional to 20,949.45, 31,419.77 and 6,154.35

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Solution

The fourth proportional to 20,949.45, 31,419.77 and 6,154.35 is: 9,230.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.45 : 31,419.77 = 6,154.35 : x
  2. Step 2: Convert to fraction form
    20,949.45/31,419.77 = 6,154.35/x
  3. Step 3: Cross multiply
    20,949.45x = 31,419.77 × 6,154.35
  4. Step 4: Simplify right side
    20,949.45x = 193,368,230.73
  5. Step 5: Solve for x
    x = 193,368,230.73/20,949.45
  6. Step 6: Final answer
    x = 9,230.23

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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.