Home / 12,205.29-18,309.15-3,320.76

Finding the Fourth Proportional to 12,205.29, 18,309.15 and 3,320.76

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Solution

The fourth proportional to 12,205.29, 18,309.15 and 3,320.76 is: 4,981.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.29 : 18,309.15 = 3,320.76 : x
  2. Step 2: Convert to fraction form
    12,205.29/18,309.15 = 3,320.76/x
  3. Step 3: Cross multiply
    12,205.29x = 18,309.15 × 3,320.76
  4. Step 4: Simplify right side
    12,205.29x = 60,800,292.95
  5. Step 5: Solve for x
    x = 60,800,292.95/12,205.29
  6. Step 6: Final answer
    x = 4,981.47

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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.