Home / 11,239.70-16,839.30-5,383.40

Finding the Fourth Proportional to 11,239.70, 16,839.30 and 5,383.40

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Solution

The fourth proportional to 11,239.70, 16,839.30 and 5,383.40 is: 8,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.70 : 16,839.30 = 5,383.40 : x
  2. Step 2: Convert to fraction form
    11,239.70/16,839.30 = 5,383.40/x
  3. Step 3: Cross multiply
    11,239.70x = 16,839.30 × 5,383.40
  4. Step 4: Simplify right side
    11,239.70x = 90,652,687.62
  5. Step 5: Solve for x
    x = 90,652,687.62/11,239.70
  6. Step 6: Final answer
    x = 8,065.40

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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.