Home / 20,456.52-28,229.51-13,382.79

Finding the Fourth Proportional to 20,456.52, 28,229.51 and 13,382.79

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Solution

The fourth proportional to 20,456.52, 28,229.51 and 13,382.79 is: 18,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.52 : 28,229.51 = 13,382.79 : x
  2. Step 2: Convert to fraction form
    20,456.52/28,229.51 = 13,382.79/x
  3. Step 3: Cross multiply
    20,456.52x = 28,229.51 × 13,382.79
  4. Step 4: Simplify right side
    20,456.52x = 377,789,537.22
  5. Step 5: Solve for x
    x = 377,789,537.22/20,456.52
  6. Step 6: Final answer
    x = 18,467.93

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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.