Home / 20,769.48-31,113.90-18,442.44

Finding the Fourth Proportional to 20,769.48, 31,113.90 and 18,442.44

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Solution

The fourth proportional to 20,769.48, 31,113.90 and 18,442.44 is: 27,627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.48 : 31,113.90 = 18,442.44 : x
  2. Step 2: Convert to fraction form
    20,769.48/31,113.90 = 18,442.44/x
  3. Step 3: Cross multiply
    20,769.48x = 31,113.90 × 18,442.44
  4. Step 4: Simplify right side
    20,769.48x = 573,816,233.92
  5. Step 5: Solve for x
    x = 573,816,233.92/20,769.48
  6. Step 6: Final answer
    x = 27,627.86

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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.