Home / 10,215.44-15,253.94-8,111.84

Finding the Fourth Proportional to 10,215.44, 15,253.94 and 8,111.84

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Solution

The fourth proportional to 10,215.44, 15,253.94 and 8,111.84 is: 12,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.44 : 15,253.94 = 8,111.84 : x
  2. Step 2: Convert to fraction form
    10,215.44/15,253.94 = 8,111.84/x
  3. Step 3: Cross multiply
    10,215.44x = 15,253.94 × 8,111.84
  4. Step 4: Simplify right side
    10,215.44x = 123,737,520.65
  5. Step 5: Solve for x
    x = 123,737,520.65/10,215.44
  6. Step 6: Final answer
    x = 12,112.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.