Home / 12,239.44-18,359.76-5,220.38

Finding the Fourth Proportional to 12,239.44, 18,359.76 and 5,220.38

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Solution

The fourth proportional to 12,239.44, 18,359.76 and 5,220.38 is: 7,830.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.44 : 18,359.76 = 5,220.38 : x
  2. Step 2: Convert to fraction form
    12,239.44/18,359.76 = 5,220.38/x
  3. Step 3: Cross multiply
    12,239.44x = 18,359.76 × 5,220.38
  4. Step 4: Simplify right side
    12,239.44x = 95,844,923.91
  5. Step 5: Solve for x
    x = 95,844,923.91/12,239.44
  6. Step 6: Final answer
    x = 7,830.83

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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.