Home / 10,997.28-15,170.88-6,280.32

Finding the Fourth Proportional to 10,997.28, 15,170.88 and 6,280.32

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Solution

The fourth proportional to 10,997.28, 15,170.88 and 6,280.32 is: 8,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,997.28 : 15,170.88 = 6,280.32 : x
  2. Step 2: Convert to fraction form
    10,997.28/15,170.88 = 6,280.32/x
  3. Step 3: Cross multiply
    10,997.28x = 15,170.88 × 6,280.32
  4. Step 4: Simplify right side
    10,997.28x = 95,277,981.08
  5. Step 5: Solve for x
    x = 95,277,981.08/10,997.28
  6. Step 6: Final answer
    x = 8,663.78

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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.