Home / 13,140.97-18,131.14-7,832.04

Finding the Fourth Proportional to 13,140.97, 18,131.14 and 7,832.04

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Solution

The fourth proportional to 13,140.97, 18,131.14 and 7,832.04 is: 10,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.97 : 18,131.14 = 7,832.04 : x
  2. Step 2: Convert to fraction form
    13,140.97/18,131.14 = 7,832.04/x
  3. Step 3: Cross multiply
    13,140.97x = 18,131.14 × 7,832.04
  4. Step 4: Simplify right side
    13,140.97x = 142,003,813.73
  5. Step 5: Solve for x
    x = 142,003,813.73/13,140.97
  6. Step 6: Final answer
    x = 10,806.19

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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.