Home / 11,729.28-16,186.56-6,424.32

Finding the Fourth Proportional to 11,729.28, 16,186.56 and 6,424.32

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Solution

The fourth proportional to 11,729.28, 16,186.56 and 6,424.32 is: 8,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.28 : 16,186.56 = 6,424.32 : x
  2. Step 2: Convert to fraction form
    11,729.28/16,186.56 = 6,424.32/x
  3. Step 3: Cross multiply
    11,729.28x = 16,186.56 × 6,424.32
  4. Step 4: Simplify right side
    11,729.28x = 103,987,641.14
  5. Step 5: Solve for x
    x = 103,987,641.14/11,729.28
  6. Step 6: Final answer
    x = 8,865.65

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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.