Home / 11,728.19-16,184.56-6,422.90

Finding the Fourth Proportional to 11,728.19, 16,184.56 and 6,422.90

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Solution

The fourth proportional to 11,728.19, 16,184.56 and 6,422.90 is: 8,863.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.19 : 16,184.56 = 6,422.90 : x
  2. Step 2: Convert to fraction form
    11,728.19/16,184.56 = 6,422.90/x
  3. Step 3: Cross multiply
    11,728.19x = 16,184.56 × 6,422.90
  4. Step 4: Simplify right side
    11,728.19x = 103,951,725.49
  5. Step 5: Solve for x
    x = 103,951,725.49/11,728.19
  6. Step 6: Final answer
    x = 8,863.41

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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.