Home / 10,571.28-15,857.42-8,718.96

Finding the Fourth Proportional to 10,571.28, 15,857.42 and 8,718.96

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Solution

The fourth proportional to 10,571.28, 15,857.42 and 8,718.96 is: 13,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,571.28 : 15,857.42 = 8,718.96 : x
  2. Step 2: Convert to fraction form
    10,571.28/15,857.42 = 8,718.96/x
  3. Step 3: Cross multiply
    10,571.28x = 15,857.42 × 8,718.96
  4. Step 4: Simplify right side
    10,571.28x = 138,260,186.40
  5. Step 5: Solve for x
    x = 138,260,186.40/10,571.28
  6. Step 6: Final answer
    x = 13,078.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.