Home / 17,940.87-26,911.29-5,459.78

Finding the Fourth Proportional to 17,940.87, 26,911.29 and 5,459.78

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Solution

The fourth proportional to 17,940.87, 26,911.29 and 5,459.78 is: 8,189.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,940.87 : 26,911.29 = 5,459.78 : x
  2. Step 2: Convert to fraction form
    17,940.87/26,911.29 = 5,459.78/x
  3. Step 3: Cross multiply
    17,940.87x = 26,911.29 × 5,459.78
  4. Step 4: Simplify right side
    17,940.87x = 146,929,722.92
  5. Step 5: Solve for x
    x = 146,929,722.92/17,940.87
  6. Step 6: Final answer
    x = 8,189.67

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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.