Home / 20,331.54-28,060.20-11,382.48

Finding the Fourth Proportional to 20,331.54, 28,060.20 and 11,382.48

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Solution

The fourth proportional to 20,331.54, 28,060.20 and 11,382.48 is: 15,709.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.54 : 28,060.20 = 11,382.48 : x
  2. Step 2: Convert to fraction form
    20,331.54/28,060.20 = 11,382.48/x
  3. Step 3: Cross multiply
    20,331.54x = 28,060.20 × 11,382.48
  4. Step 4: Simplify right side
    20,331.54x = 319,394,665.30
  5. Step 5: Solve for x
    x = 319,394,665.30/20,331.54
  6. Step 6: Final answer
    x = 15,709.32

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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.