Home / 15,517.37-21,414.18-8,443.79

Finding the Fourth Proportional to 15,517.37, 21,414.18 and 8,443.79

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Solution

The fourth proportional to 15,517.37, 21,414.18 and 8,443.79 is: 11,652.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.37 : 21,414.18 = 8,443.79 : x
  2. Step 2: Convert to fraction form
    15,517.37/21,414.18 = 8,443.79/x
  3. Step 3: Cross multiply
    15,517.37x = 21,414.18 × 8,443.79
  4. Step 4: Simplify right side
    15,517.37x = 180,816,731.87
  5. Step 5: Solve for x
    x = 180,816,731.87/15,517.37
  6. Step 6: Final answer
    x = 11,652.54

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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.