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Finding the Fourth Proportional to 15,189.84, 22,791.33 and 8,161.65

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Solution

The fourth proportional to 15,189.84, 22,791.33 and 8,161.65 is: 12,246.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.84 : 22,791.33 = 8,161.65 : x
  2. Step 2: Convert to fraction form
    15,189.84/22,791.33 = 8,161.65/x
  3. Step 3: Cross multiply
    15,189.84x = 22,791.33 × 8,161.65
  4. Step 4: Simplify right side
    15,189.84x = 186,014,858.49
  5. Step 5: Solve for x
    x = 186,014,858.49/15,189.84
  6. Step 6: Final answer
    x = 12,246.01

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1.5x scale

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.