Home / 11,729.48-16,186.68-6,424.30

Finding the Fourth Proportional to 11,729.48, 16,186.68 and 6,424.30

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Solution

The fourth proportional to 11,729.48, 16,186.68 and 6,424.30 is: 8,865.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.48 : 16,186.68 = 6,424.30 : x
  2. Step 2: Convert to fraction form
    11,729.48/16,186.68 = 6,424.30/x
  3. Step 3: Cross multiply
    11,729.48x = 16,186.68 × 6,424.30
  4. Step 4: Simplify right side
    11,729.48x = 103,988,007.39
  5. Step 5: Solve for x
    x = 103,988,007.39/11,729.48
  6. Step 6: Final answer
    x = 8,865.53

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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.