Home / 28,786.56-43,081.92-17,687.40

Finding the Fourth Proportional to 28,786.56, 43,081.92 and 17,687.40

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Solution

The fourth proportional to 28,786.56, 43,081.92 and 17,687.40 is: 26,470.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.56 : 43,081.92 = 17,687.40 : x
  2. Step 2: Convert to fraction form
    28,786.56/43,081.92 = 17,687.40/x
  3. Step 3: Cross multiply
    28,786.56x = 43,081.92 × 17,687.40
  4. Step 4: Simplify right side
    28,786.56x = 762,007,151.81
  5. Step 5: Solve for x
    x = 762,007,151.81/28,786.56
  6. Step 6: Final answer
    x = 26,470.93

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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.