Home / 12,440.75-18,661.23-3,557.12

Finding the Fourth Proportional to 12,440.75, 18,661.23 and 3,557.12

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Solution

The fourth proportional to 12,440.75, 18,661.23 and 3,557.12 is: 5,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.75 : 18,661.23 = 3,557.12 : x
  2. Step 2: Convert to fraction form
    12,440.75/18,661.23 = 3,557.12/x
  3. Step 3: Cross multiply
    12,440.75x = 18,661.23 × 3,557.12
  4. Step 4: Simplify right side
    12,440.75x = 66,380,141.15
  5. Step 5: Solve for x
    x = 66,380,141.15/12,440.75
  6. Step 6: Final answer
    x = 5,335.70

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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.