Home / 20,947.44-28,909.10-11,997.82

Finding the Fourth Proportional to 20,947.44, 28,909.10 and 11,997.82

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Solution

The fourth proportional to 20,947.44, 28,909.10 and 11,997.82 is: 16,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.44 : 28,909.10 = 11,997.82 : x
  2. Step 2: Convert to fraction form
    20,947.44/28,909.10 = 11,997.82/x
  3. Step 3: Cross multiply
    20,947.44x = 28,909.10 × 11,997.82
  4. Step 4: Simplify right side
    20,947.44x = 346,846,244.29
  5. Step 5: Solve for x
    x = 346,846,244.29/20,947.44
  6. Step 6: Final answer
    x = 16,557.93

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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.