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Finding the Fourth Proportional to 33,207.40, 49,811.10 and 12,147.40

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Solution

The fourth proportional to 33,207.40, 49,811.10 and 12,147.40 is: 18,221.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,207.40 : 49,811.10 = 12,147.40 : x
  2. Step 2: Convert to fraction form
    33,207.40/49,811.10 = 12,147.40/x
  3. Step 3: Cross multiply
    33,207.40x = 49,811.10 × 12,147.40
  4. Step 4: Simplify right side
    33,207.40x = 605,075,356.14
  5. Step 5: Solve for x
    x = 605,075,356.14/33,207.40
  6. Step 6: Final answer
    x = 18,221.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.