Home / 11,729.39-16,186.56-6,424.22

Finding the Fourth Proportional to 11,729.39, 16,186.56 and 6,424.22

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Solution

The fourth proportional to 11,729.39, 16,186.56 and 6,424.22 is: 8,865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.39 : 16,186.56 = 6,424.22 : x
  2. Step 2: Convert to fraction form
    11,729.39/16,186.56 = 6,424.22/x
  3. Step 3: Cross multiply
    11,729.39x = 16,186.56 × 6,424.22
  4. Step 4: Simplify right side
    11,729.39x = 103,986,011.40
  5. Step 5: Solve for x
    x = 103,986,011.40/11,729.39
  6. Step 6: Final answer
    x = 8,865.42

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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.