Home / 12,478.75-18,719.34-3,244.75

Finding the Fourth Proportional to 12,478.75, 18,719.34 and 3,244.75

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Solution

The fourth proportional to 12,478.75, 18,719.34 and 3,244.75 is: 4,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.75 : 18,719.34 = 3,244.75 : x
  2. Step 2: Convert to fraction form
    12,478.75/18,719.34 = 3,244.75/x
  3. Step 3: Cross multiply
    12,478.75x = 18,719.34 × 3,244.75
  4. Step 4: Simplify right side
    12,478.75x = 60,739,578.47
  5. Step 5: Solve for x
    x = 60,739,578.47/12,478.75
  6. Step 6: Final answer
    x = 4,867.44

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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.