Home / 20,377.48-28,104.96-13,660.96

Finding the Fourth Proportional to 20,377.48, 28,104.96 and 13,660.96

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Solution

The fourth proportional to 20,377.48, 28,104.96 and 13,660.96 is: 18,841.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.48 : 28,104.96 = 13,660.96 : x
  2. Step 2: Convert to fraction form
    20,377.48/28,104.96 = 13,660.96/x
  3. Step 3: Cross multiply
    20,377.48x = 28,104.96 × 13,660.96
  4. Step 4: Simplify right side
    20,377.48x = 383,940,734.36
  5. Step 5: Solve for x
    x = 383,940,734.36/20,377.48
  6. Step 6: Final answer
    x = 18,841.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.