Home / 13,180.14-18,189.14-7,212.33

Finding the Fourth Proportional to 13,180.14, 18,189.14 and 7,212.33

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Solution

The fourth proportional to 13,180.14, 18,189.14 and 7,212.33 is: 9,953.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.14 : 18,189.14 = 7,212.33 : x
  2. Step 2: Convert to fraction form
    13,180.14/18,189.14 = 7,212.33/x
  3. Step 3: Cross multiply
    13,180.14x = 18,189.14 × 7,212.33
  4. Step 4: Simplify right side
    13,180.14x = 131,186,044.03
  5. Step 5: Solve for x
    x = 131,186,044.03/13,180.14
  6. Step 6: Final answer
    x = 9,953.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.