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Finding the Fourth Proportional to 12,692.53, 17,636.48 and 12,555.64

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Solution

The fourth proportional to 12,692.53, 17,636.48 and 12,555.64 is: 17,446.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.53 : 17,636.48 = 12,555.64 : x
  2. Step 2: Convert to fraction form
    12,692.53/17,636.48 = 12,555.64/x
  3. Step 3: Cross multiply
    12,692.53x = 17,636.48 × 12,555.64
  4. Step 4: Simplify right side
    12,692.53x = 221,437,293.75
  5. Step 5: Solve for x
    x = 221,437,293.75/12,692.53
  6. Step 6: Final answer
    x = 17,446.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.