Home / 15,910.20-21,956.10-8,836.44

Finding the Fourth Proportional to 15,910.20, 21,956.10 and 8,836.44

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Solution

The fourth proportional to 15,910.20, 21,956.10 and 8,836.44 is: 12,194.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.20 : 21,956.10 = 8,836.44 : x
  2. Step 2: Convert to fraction form
    15,910.20/21,956.10 = 8,836.44/x
  3. Step 3: Cross multiply
    15,910.20x = 21,956.10 × 8,836.44
  4. Step 4: Simplify right side
    15,910.20x = 194,013,760.28
  5. Step 5: Solve for x
    x = 194,013,760.28/15,910.20
  6. Step 6: Final answer
    x = 12,194.30

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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.