Home / 20,231.13-30,348.51-5,439.72

Finding the Fourth Proportional to 20,231.13, 30,348.51 and 5,439.72

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Solution

The fourth proportional to 20,231.13, 30,348.51 and 5,439.72 is: 8,160.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.13 : 30,348.51 = 5,439.72 : x
  2. Step 2: Convert to fraction form
    20,231.13/30,348.51 = 5,439.72/x
  3. Step 3: Cross multiply
    20,231.13x = 30,348.51 × 5,439.72
  4. Step 4: Simplify right side
    20,231.13x = 165,087,396.82
  5. Step 5: Solve for x
    x = 165,087,396.82/20,231.13
  6. Step 6: Final answer
    x = 8,160.07

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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.