Home / 10,418.85-15,625.49-2,921.96

Finding the Fourth Proportional to 10,418.85, 15,625.49 and 2,921.96

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Solution

The fourth proportional to 10,418.85, 15,625.49 and 2,921.96 is: 4,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.85 : 15,625.49 = 2,921.96 : x
  2. Step 2: Convert to fraction form
    10,418.85/15,625.49 = 2,921.96/x
  3. Step 3: Cross multiply
    10,418.85x = 15,625.49 × 2,921.96
  4. Step 4: Simplify right side
    10,418.85x = 45,657,103.13
  5. Step 5: Solve for x
    x = 45,657,103.13/10,418.85
  6. Step 6: Final answer
    x = 4,382.16

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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.