Home / 13,197.11-18,212.29-7,229.03

Finding the Fourth Proportional to 13,197.11, 18,212.29 and 7,229.03

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Solution

The fourth proportional to 13,197.11, 18,212.29 and 7,229.03 is: 9,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.11 : 18,212.29 = 7,229.03 : x
  2. Step 2: Convert to fraction form
    13,197.11/18,212.29 = 7,229.03/x
  3. Step 3: Cross multiply
    13,197.11x = 18,212.29 × 7,229.03
  4. Step 4: Simplify right side
    13,197.11x = 131,657,081.64
  5. Step 5: Solve for x
    x = 131,657,081.64/13,197.11
  6. Step 6: Final answer
    x = 9,976.21

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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.