Home / 20,754.43-28,641.38-11,322.98

Finding the Fourth Proportional to 20,754.43, 28,641.38 and 11,322.98

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Solution

The fourth proportional to 20,754.43, 28,641.38 and 11,322.98 is: 15,625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.43 : 28,641.38 = 11,322.98 : x
  2. Step 2: Convert to fraction form
    20,754.43/28,641.38 = 11,322.98/x
  3. Step 3: Cross multiply
    20,754.43x = 28,641.38 × 11,322.98
  4. Step 4: Simplify right side
    20,754.43x = 324,305,772.91
  5. Step 5: Solve for x
    x = 324,305,772.91/20,754.43
  6. Step 6: Final answer
    x = 15,625.86

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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.