Home / 11,279.38-16,909.35-5,440.09

Finding the Fourth Proportional to 11,279.38, 16,909.35 and 5,440.09

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Solution

The fourth proportional to 11,279.38, 16,909.35 and 5,440.09 is: 8,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.38 : 16,909.35 = 5,440.09 : x
  2. Step 2: Convert to fraction form
    11,279.38/16,909.35 = 5,440.09/x
  3. Step 3: Cross multiply
    11,279.38x = 16,909.35 × 5,440.09
  4. Step 4: Simplify right side
    11,279.38x = 91,988,385.84
  5. Step 5: Solve for x
    x = 91,988,385.84/11,279.38
  6. Step 6: Final answer
    x = 8,155.45

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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.