Home / 11,729.89-16,187.12-6,424.39

Finding the Fourth Proportional to 11,729.89, 16,187.12 and 6,424.39

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Solution

The fourth proportional to 11,729.89, 16,187.12 and 6,424.39 is: 8,865.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.89 : 16,187.12 = 6,424.39 : x
  2. Step 2: Convert to fraction form
    11,729.89/16,187.12 = 6,424.39/x
  3. Step 3: Cross multiply
    11,729.89x = 16,187.12 × 6,424.39
  4. Step 4: Simplify right side
    11,729.89x = 103,992,371.86
  5. Step 5: Solve for x
    x = 103,992,371.86/11,729.89
  6. Step 6: Final answer
    x = 8,865.59

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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.