Home / 12,991.11-19,475.73-5,195.67

Finding the Fourth Proportional to 12,991.11, 19,475.73 and 5,195.67

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Solution

The fourth proportional to 12,991.11, 19,475.73 and 5,195.67 is: 7,789.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.11 : 19,475.73 = 5,195.67 : x
  2. Step 2: Convert to fraction form
    12,991.11/19,475.73 = 5,195.67/x
  3. Step 3: Cross multiply
    12,991.11x = 19,475.73 × 5,195.67
  4. Step 4: Simplify right side
    12,991.11x = 101,189,466.09
  5. Step 5: Solve for x
    x = 101,189,466.09/12,991.11
  6. Step 6: Final answer
    x = 7,789.13

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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.