Home / 12,422.10-18,579.15-11,115.30

Finding the Fourth Proportional to 12,422.10, 18,579.15 and 11,115.30

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Solution

The fourth proportional to 12,422.10, 18,579.15 and 11,115.30 is: 16,624.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.10 : 18,579.15 = 11,115.30 : x
  2. Step 2: Convert to fraction form
    12,422.10/18,579.15 = 11,115.30/x
  3. Step 3: Cross multiply
    12,422.10x = 18,579.15 × 11,115.30
  4. Step 4: Simplify right side
    12,422.10x = 206,512,826.00
  5. Step 5: Solve for x
    x = 206,512,826.00/12,422.10
  6. Step 6: Final answer
    x = 16,624.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.