Home / 20,949.14-31,429.11-6,158.54

Finding the Fourth Proportional to 20,949.14, 31,429.11 and 6,158.54

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Solution

The fourth proportional to 20,949.14, 31,429.11 and 6,158.54 is: 9,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.14 : 31,429.11 = 6,158.54 : x
  2. Step 2: Convert to fraction form
    20,949.14/31,429.11 = 6,158.54/x
  3. Step 3: Cross multiply
    20,949.14x = 31,429.11 × 6,158.54
  4. Step 4: Simplify right side
    20,949.14x = 193,557,431.10
  5. Step 5: Solve for x
    x = 193,557,431.10/20,949.14
  6. Step 6: Final answer
    x = 9,239.40

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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.