Home / 12,215.28-18,324.84-4,819.76

Finding the Fourth Proportional to 12,215.28, 18,324.84 and 4,819.76

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Solution

The fourth proportional to 12,215.28, 18,324.84 and 4,819.76 is: 7,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.28 : 18,324.84 = 4,819.76 : x
  2. Step 2: Convert to fraction form
    12,215.28/18,324.84 = 4,819.76/x
  3. Step 3: Cross multiply
    12,215.28x = 18,324.84 × 4,819.76
  4. Step 4: Simplify right side
    12,215.28x = 88,321,330.84
  5. Step 5: Solve for x
    x = 88,321,330.84/12,215.28
  6. Step 6: Final answer
    x = 7,230.40

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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.