Home / 11,486.70-17,219.39-4,089.78

Finding the Fourth Proportional to 11,486.70, 17,219.39 and 4,089.78

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Solution

The fourth proportional to 11,486.70, 17,219.39 and 4,089.78 is: 6,130.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,486.70 : 17,219.39 = 4,089.78 : x
  2. Step 2: Convert to fraction form
    11,486.70/17,219.39 = 4,089.78/x
  3. Step 3: Cross multiply
    11,486.70x = 17,219.39 × 4,089.78
  4. Step 4: Simplify right side
    11,486.70x = 70,423,496.39
  5. Step 5: Solve for x
    x = 70,423,496.39/11,486.70
  6. Step 6: Final answer
    x = 6,130.87

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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.