Home / 20,538.25-28,335.79-16,754.83

Finding the Fourth Proportional to 20,538.25, 28,335.79 and 16,754.83

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Solution

The fourth proportional to 20,538.25, 28,335.79 and 16,754.83 is: 23,115.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.25 : 28,335.79 = 16,754.83 : x
  2. Step 2: Convert to fraction form
    20,538.25/28,335.79 = 16,754.83/x
  3. Step 3: Cross multiply
    20,538.25x = 28,335.79 × 16,754.83
  4. Step 4: Simplify right side
    20,538.25x = 474,761,344.37
  5. Step 5: Solve for x
    x = 474,761,344.37/20,538.25
  6. Step 6: Final answer
    x = 23,115.96

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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.