Home / 11,026.80-16,540.20-10,105.20

Finding the Fourth Proportional to 11,026.80, 16,540.20 and 10,105.20

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Solution

The fourth proportional to 11,026.80, 16,540.20 and 10,105.20 is: 15,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,026.80 : 16,540.20 = 10,105.20 : x
  2. Step 2: Convert to fraction form
    11,026.80/16,540.20 = 10,105.20/x
  3. Step 3: Cross multiply
    11,026.80x = 16,540.20 × 10,105.20
  4. Step 4: Simplify right side
    11,026.80x = 167,142,029.04
  5. Step 5: Solve for x
    x = 167,142,029.04/11,026.80
  6. Step 6: Final answer
    x = 15,157.80

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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.