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Finding the Fourth Proportional to 10,878.96, 15,040.41 and 8,041.86

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Solution

The fourth proportional to 10,878.96, 15,040.41 and 8,041.86 is: 11,118.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.96 : 15,040.41 = 8,041.86 : x
  2. Step 2: Convert to fraction form
    10,878.96/15,040.41 = 8,041.86/x
  3. Step 3: Cross multiply
    10,878.96x = 15,040.41 × 8,041.86
  4. Step 4: Simplify right side
    10,878.96x = 120,952,871.56
  5. Step 5: Solve for x
    x = 120,952,871.56/10,878.96
  6. Step 6: Final answer
    x = 11,118.05

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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.