Home / 11,819.28-16,311.32-6,515.28

Finding the Fourth Proportional to 11,819.28, 16,311.32 and 6,515.28

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Solution

The fourth proportional to 11,819.28, 16,311.32 and 6,515.28 is: 8,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.28 : 16,311.32 = 6,515.28 : x
  2. Step 2: Convert to fraction form
    11,819.28/16,311.32 = 6,515.28/x
  3. Step 3: Cross multiply
    11,819.28x = 16,311.32 × 6,515.28
  4. Step 4: Simplify right side
    11,819.28x = 106,272,816.97
  5. Step 5: Solve for x
    x = 106,272,816.97/11,819.28
  6. Step 6: Final answer
    x = 8,991.48

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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.