Home / 21,382.98-32,081.44-10,290.56

Finding the Fourth Proportional to 21,382.98, 32,081.44 and 10,290.56

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Solution

The fourth proportional to 21,382.98, 32,081.44 and 10,290.56 is: 15,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.98 : 32,081.44 = 10,290.56 : x
  2. Step 2: Convert to fraction form
    21,382.98/32,081.44 = 10,290.56/x
  3. Step 3: Cross multiply
    21,382.98x = 32,081.44 × 10,290.56
  4. Step 4: Simplify right side
    21,382.98x = 330,135,983.21
  5. Step 5: Solve for x
    x = 330,135,983.21/21,382.98
  6. Step 6: Final answer
    x = 15,439.19

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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.