Home / 15,895.44-21,936.24-8,821.20

Finding the Fourth Proportional to 15,895.44, 21,936.24 and 8,821.20

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Solution

The fourth proportional to 15,895.44, 21,936.24 and 8,821.20 is: 12,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,895.44 : 21,936.24 = 8,821.20 : x
  2. Step 2: Convert to fraction form
    15,895.44/21,936.24 = 8,821.20/x
  3. Step 3: Cross multiply
    15,895.44x = 21,936.24 × 8,821.20
  4. Step 4: Simplify right side
    15,895.44x = 193,503,960.29
  5. Step 5: Solve for x
    x = 193,503,960.29/15,895.44
  6. Step 6: Final answer
    x = 12,173.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.