Home / 11,729.09-16,186.28-6,424.13

Finding the Fourth Proportional to 11,729.09, 16,186.28 and 6,424.13

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Solution

The fourth proportional to 11,729.09, 16,186.28 and 6,424.13 is: 8,865.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.09 : 16,186.28 = 6,424.13 : x
  2. Step 2: Convert to fraction form
    11,729.09/16,186.28 = 6,424.13/x
  3. Step 3: Cross multiply
    11,729.09x = 16,186.28 × 6,424.13
  4. Step 4: Simplify right side
    11,729.09x = 103,982,653.88
  5. Step 5: Solve for x
    x = 103,982,653.88/11,729.09
  6. Step 6: Final answer
    x = 8,865.37

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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.