Home / 12,229.80-18,330.30-5,209.80

Finding the Fourth Proportional to 12,229.80, 18,330.30 and 5,209.80

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Solution

The fourth proportional to 12,229.80, 18,330.30 and 5,209.80 is: 7,808.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.80 : 18,330.30 = 5,209.80 : x
  2. Step 2: Convert to fraction form
    12,229.80/18,330.30 = 5,209.80/x
  3. Step 3: Cross multiply
    12,229.80x = 18,330.30 × 5,209.80
  4. Step 4: Simplify right side
    12,229.80x = 95,497,196.94
  5. Step 5: Solve for x
    x = 95,497,196.94/12,229.80
  6. Step 6: Final answer
    x = 7,808.57

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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.