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Finding the Fourth Proportional to 12,692.54, 17,520.61 and 11,363.94

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Solution

The fourth proportional to 12,692.54, 17,520.61 and 11,363.94 is: 15,686.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.54 : 17,520.61 = 11,363.94 : x
  2. Step 2: Convert to fraction form
    12,692.54/17,520.61 = 11,363.94/x
  3. Step 3: Cross multiply
    12,692.54x = 17,520.61 × 11,363.94
  4. Step 4: Simplify right side
    12,692.54x = 199,103,109.31
  5. Step 5: Solve for x
    x = 199,103,109.31/12,692.54
  6. Step 6: Final answer
    x = 15,686.63

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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.