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Finding the Fourth Proportional to 10,878.56, 15,012.48 and 5,910.56

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Solution

The fourth proportional to 10,878.56, 15,012.48 and 5,910.56 is: 8,156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.56 : 15,012.48 = 5,910.56 : x
  2. Step 2: Convert to fraction form
    10,878.56/15,012.48 = 5,910.56/x
  3. Step 3: Cross multiply
    10,878.56x = 15,012.48 × 5,910.56
  4. Step 4: Simplify right side
    10,878.56x = 88,732,163.79
  5. Step 5: Solve for x
    x = 88,732,163.79/10,878.56
  6. Step 6: Final answer
    x = 8,156.61

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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.