Home / 13,160.33-18,160.28-7,190.73

Finding the Fourth Proportional to 13,160.33, 18,160.28 and 7,190.73

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Solution

The fourth proportional to 13,160.33, 18,160.28 and 7,190.73 is: 9,922.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.33 : 18,160.28 = 7,190.73 : x
  2. Step 2: Convert to fraction form
    13,160.33/18,160.28 = 7,190.73/x
  3. Step 3: Cross multiply
    13,160.33x = 18,160.28 × 7,190.73
  4. Step 4: Simplify right side
    13,160.33x = 130,585,634.25
  5. Step 5: Solve for x
    x = 130,585,634.25/13,160.33
  6. Step 6: Final answer
    x = 9,922.68

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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.