Home / 11,288.43-16,939.12-8,816.31

Finding the Fourth Proportional to 11,288.43, 16,939.12 and 8,816.31

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Solution

The fourth proportional to 11,288.43, 16,939.12 and 8,816.31 is: 13,229.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,288.43 : 16,939.12 = 8,816.31 : x
  2. Step 2: Convert to fraction form
    11,288.43/16,939.12 = 8,816.31/x
  3. Step 3: Cross multiply
    11,288.43x = 16,939.12 × 8,816.31
  4. Step 4: Simplify right side
    11,288.43x = 149,340,448.35
  5. Step 5: Solve for x
    x = 149,340,448.35/11,288.43
  6. Step 6: Final answer
    x = 13,229.52

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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.