Home / 28,761.92-43,134.96-18,216.12

Finding the Fourth Proportional to 28,761.92, 43,134.96 and 18,216.12

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Solution

The fourth proportional to 28,761.92, 43,134.96 and 18,216.12 is: 27,319.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.92 : 43,134.96 = 18,216.12 : x
  2. Step 2: Convert to fraction form
    28,761.92/43,134.96 = 18,216.12/x
  3. Step 3: Cross multiply
    28,761.92x = 43,134.96 × 18,216.12
  4. Step 4: Simplify right side
    28,761.92x = 785,751,837.62
  5. Step 5: Solve for x
    x = 785,751,837.62/28,761.92
  6. Step 6: Final answer
    x = 27,319.17

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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.