Home / 11,918.28-16,447.74-6,612.78

Finding the Fourth Proportional to 11,918.28, 16,447.74 and 6,612.78

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Solution

The fourth proportional to 11,918.28, 16,447.74 and 6,612.78 is: 9,125.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.28 : 16,447.74 = 6,612.78 : x
  2. Step 2: Convert to fraction form
    11,918.28/16,447.74 = 6,612.78/x
  3. Step 3: Cross multiply
    11,918.28x = 16,447.74 × 6,612.78
  4. Step 4: Simplify right side
    11,918.28x = 108,765,286.12
  5. Step 5: Solve for x
    x = 108,765,286.12/11,918.28
  6. Step 6: Final answer
    x = 9,125.92

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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.