Home / 10,106.92-13,942.20-8,220.52

Finding the Fourth Proportional to 10,106.92, 13,942.20 and 8,220.52

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Solution

The fourth proportional to 10,106.92, 13,942.20 and 8,220.52 is: 11,339.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,106.92 : 13,942.20 = 8,220.52 : x
  2. Step 2: Convert to fraction form
    10,106.92/13,942.20 = 8,220.52/x
  3. Step 3: Cross multiply
    10,106.92x = 13,942.20 × 8,220.52
  4. Step 4: Simplify right side
    10,106.92x = 114,612,133.94
  5. Step 5: Solve for x
    x = 114,612,133.94/10,106.92
  6. Step 6: Final answer
    x = 11,339.97

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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.