Home / 28,780.80-43,171.28-9,060.96

Finding the Fourth Proportional to 28,780.80, 43,171.28 and 9,060.96

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Solution

The fourth proportional to 28,780.80, 43,171.28 and 9,060.96 is: 13,591.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.80 : 43,171.28 = 9,060.96 : x
  2. Step 2: Convert to fraction form
    28,780.80/43,171.28 = 9,060.96/x
  3. Step 3: Cross multiply
    28,780.80x = 43,171.28 × 9,060.96
  4. Step 4: Simplify right side
    28,780.80x = 391,173,241.23
  5. Step 5: Solve for x
    x = 391,173,241.23/28,780.80
  6. Step 6: Final answer
    x = 13,591.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.