Home / 12,239.89-16,891.35-7,204.37

Finding the Fourth Proportional to 12,239.89, 16,891.35 and 7,204.37

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Solution

The fourth proportional to 12,239.89, 16,891.35 and 7,204.37 is: 9,942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.89 : 16,891.35 = 7,204.37 : x
  2. Step 2: Convert to fraction form
    12,239.89/16,891.35 = 7,204.37/x
  3. Step 3: Cross multiply
    12,239.89x = 16,891.35 × 7,204.37
  4. Step 4: Simplify right side
    12,239.89x = 121,691,535.20
  5. Step 5: Solve for x
    x = 121,691,535.20/12,239.89
  6. Step 6: Final answer
    x = 9,942.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.