Home / 28,753.20-43,129.80-7,976.72

Finding the Fourth Proportional to 28,753.20, 43,129.80 and 7,976.72

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Solution

The fourth proportional to 28,753.20, 43,129.80 and 7,976.72 is: 11,965.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,753.20 : 43,129.80 = 7,976.72 : x
  2. Step 2: Convert to fraction form
    28,753.20/43,129.80 = 7,976.72/x
  3. Step 3: Cross multiply
    28,753.20x = 43,129.80 × 7,976.72
  4. Step 4: Simplify right side
    28,753.20x = 344,034,338.26
  5. Step 5: Solve for x
    x = 344,034,338.26/28,753.20
  6. Step 6: Final answer
    x = 11,965.08

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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.