Home / 20,377.23-28,104.62-13,660.71

Finding the Fourth Proportional to 20,377.23, 28,104.62 and 13,660.71

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Solution

The fourth proportional to 20,377.23, 28,104.62 and 13,660.71 is: 18,841.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.23 : 28,104.62 = 13,660.71 : x
  2. Step 2: Convert to fraction form
    20,377.23/28,104.62 = 13,660.71/x
  3. Step 3: Cross multiply
    20,377.23x = 28,104.62 × 13,660.71
  4. Step 4: Simplify right side
    20,377.23x = 383,928,995.18
  5. Step 5: Solve for x
    x = 383,928,995.18/20,377.23
  6. Step 6: Final answer
    x = 18,841.08

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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.