Home / 10,872.52-15,003.84-6,396.64

Finding the Fourth Proportional to 10,872.52, 15,003.84 and 6,396.64

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Solution

The fourth proportional to 10,872.52, 15,003.84 and 6,396.64 is: 8,827.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,872.52 : 15,003.84 = 6,396.64 : x
  2. Step 2: Convert to fraction form
    10,872.52/15,003.84 = 6,396.64/x
  3. Step 3: Cross multiply
    10,872.52x = 15,003.84 × 6,396.64
  4. Step 4: Simplify right side
    10,872.52x = 95,974,163.10
  5. Step 5: Solve for x
    x = 95,974,163.10/10,872.52
  6. Step 6: Final answer
    x = 8,827.22

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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.