Home / 12,145.92-18,207.36-5,216

Finding the Fourth Proportional to 12,145.92, 18,207.36 and 5,216

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Solution

The fourth proportional to 12,145.92, 18,207.36 and 5,216 is: 7,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.92 : 18,207.36 = 5,216 : x
  2. Step 2: Convert to fraction form
    12,145.92/18,207.36 = 5,216/x
  3. Step 3: Cross multiply
    12,145.92x = 18,207.36 × 5,216
  4. Step 4: Simplify right side
    12,145.92x = 94,969,589.76
  5. Step 5: Solve for x
    x = 94,969,589.76/12,145.92
  6. Step 6: Final answer
    x = 7,819.05

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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.