Home / 13,220.39-19,791.61-11,580.14

Finding the Fourth Proportional to 13,220.39, 19,791.61 and 11,580.14

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Solution

The fourth proportional to 13,220.39, 19,791.61 and 11,580.14 is: 17,336.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.39 : 19,791.61 = 11,580.14 : x
  2. Step 2: Convert to fraction form
    13,220.39/19,791.61 = 11,580.14/x
  3. Step 3: Cross multiply
    13,220.39x = 19,791.61 × 11,580.14
  4. Step 4: Simplify right side
    13,220.39x = 229,189,635.15
  5. Step 5: Solve for x
    x = 229,189,635.15/13,220.39
  6. Step 6: Final answer
    x = 17,336.07

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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.