Home / 15,415.92-23,121.36-4,321.62

Finding the Fourth Proportional to 15,415.92, 23,121.36 and 4,321.62

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Solution

The fourth proportional to 15,415.92, 23,121.36 and 4,321.62 is: 6,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.92 : 23,121.36 = 4,321.62 : x
  2. Step 2: Convert to fraction form
    15,415.92/23,121.36 = 4,321.62/x
  3. Step 3: Cross multiply
    15,415.92x = 23,121.36 × 4,321.62
  4. Step 4: Simplify right side
    15,415.92x = 99,921,731.80
  5. Step 5: Solve for x
    x = 99,921,731.80/15,415.92
  6. Step 6: Final answer
    x = 6,481.72

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1.5x scale

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.