Home / 20,876.25-28,809.23-11,444.88

Finding the Fourth Proportional to 20,876.25, 28,809.23 and 11,444.88

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Solution

The fourth proportional to 20,876.25, 28,809.23 and 11,444.88 is: 15,793.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.25 : 28,809.23 = 11,444.88 : x
  2. Step 2: Convert to fraction form
    20,876.25/28,809.23 = 11,444.88/x
  3. Step 3: Cross multiply
    20,876.25x = 28,809.23 × 11,444.88
  4. Step 4: Simplify right side
    20,876.25x = 329,718,123.02
  5. Step 5: Solve for x
    x = 329,718,123.02/20,876.25
  6. Step 6: Final answer
    x = 15,793.93

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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.