Home / 13,197.12-18,212.03-7,228.80

Finding the Fourth Proportional to 13,197.12, 18,212.03 and 7,228.80

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Solution

The fourth proportional to 13,197.12, 18,212.03 and 7,228.80 is: 9,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.12 : 18,212.03 = 7,228.80 : x
  2. Step 2: Convert to fraction form
    13,197.12/18,212.03 = 7,228.80/x
  3. Step 3: Cross multiply
    13,197.12x = 18,212.03 × 7,228.80
  4. Step 4: Simplify right side
    13,197.12x = 131,651,122.46
  5. Step 5: Solve for x
    x = 131,651,122.46/13,197.12
  6. Step 6: Final answer
    x = 9,975.75

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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.