Home / 13,212.19-19,791.87-7,944.31

Finding the Fourth Proportional to 13,212.19, 19,791.87 and 7,944.31

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Solution

The fourth proportional to 13,212.19, 19,791.87 and 7,944.31 is: 11,900.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.19 : 19,791.87 = 7,944.31 : x
  2. Step 2: Convert to fraction form
    13,212.19/19,791.87 = 7,944.31/x
  3. Step 3: Cross multiply
    13,212.19x = 19,791.87 × 7,944.31
  4. Step 4: Simplify right side
    13,212.19x = 157,232,795.36
  5. Step 5: Solve for x
    x = 157,232,795.36/13,212.19
  6. Step 6: Final answer
    x = 11,900.59

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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.