Home / 12,084.80-18,127.20-3,320.72

Finding the Fourth Proportional to 12,084.80, 18,127.20 and 3,320.72

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Solution

The fourth proportional to 12,084.80, 18,127.20 and 3,320.72 is: 4,981.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.80 : 18,127.20 = 3,320.72 : x
  2. Step 2: Convert to fraction form
    12,084.80/18,127.20 = 3,320.72/x
  3. Step 3: Cross multiply
    12,084.80x = 18,127.20 × 3,320.72
  4. Step 4: Simplify right side
    12,084.80x = 60,195,355.58
  5. Step 5: Solve for x
    x = 60,195,355.58/12,084.80
  6. Step 6: Final answer
    x = 4,981.08

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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.