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Finding the Fourth Proportional to 19,791.84, 29,692.62 and 9,113.21

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Solution

The fourth proportional to 19,791.84, 29,692.62 and 9,113.21 is: 13,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.84 : 29,692.62 = 9,113.21 : x
  2. Step 2: Convert to fraction form
    19,791.84/29,692.62 = 9,113.21/x
  3. Step 3: Cross multiply
    19,791.84x = 29,692.62 × 9,113.21
  4. Step 4: Simplify right side
    19,791.84x = 270,594,933.05
  5. Step 5: Solve for x
    x = 270,594,933.05/19,791.84
  6. Step 6: Final answer
    x = 13,672.05

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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.