Home / 11,839.88-16,343.70-7,806.08

Finding the Fourth Proportional to 11,839.88, 16,343.70 and 7,806.08

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Solution

The fourth proportional to 11,839.88, 16,343.70 and 7,806.08 is: 10,775.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,839.88 : 16,343.70 = 7,806.08 : x
  2. Step 2: Convert to fraction form
    11,839.88/16,343.70 = 7,806.08/x
  3. Step 3: Cross multiply
    11,839.88x = 16,343.70 × 7,806.08
  4. Step 4: Simplify right side
    11,839.88x = 127,580,229.70
  5. Step 5: Solve for x
    x = 127,580,229.70/11,839.88
  6. Step 6: Final answer
    x = 10,775.47

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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.