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Finding the Fourth Proportional to 13,620.69, 18,793.22 and 7,952.22

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Solution

The fourth proportional to 13,620.69, 18,793.22 and 7,952.22 is: 10,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.69 : 18,793.22 = 7,952.22 : x
  2. Step 2: Convert to fraction form
    13,620.69/18,793.22 = 7,952.22/x
  3. Step 3: Cross multiply
    13,620.69x = 18,793.22 × 7,952.22
  4. Step 4: Simplify right side
    13,620.69x = 149,447,780.19
  5. Step 5: Solve for x
    x = 149,447,780.19/13,620.69
  6. Step 6: Final answer
    x = 10,972.12

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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.