Home / 13,997.28-20,975.76-8,073.92

Finding the Fourth Proportional to 13,997.28, 20,975.76 and 8,073.92

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Solution

The fourth proportional to 13,997.28, 20,975.76 and 8,073.92 is: 12,099.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.28 : 20,975.76 = 8,073.92 : x
  2. Step 2: Convert to fraction form
    13,997.28/20,975.76 = 8,073.92/x
  3. Step 3: Cross multiply
    13,997.28x = 20,975.76 × 8,073.92
  4. Step 4: Simplify right side
    13,997.28x = 169,356,608.18
  5. Step 5: Solve for x
    x = 169,356,608.18/13,997.28
  6. Step 6: Final answer
    x = 12,099.25

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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.