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Finding the Fourth Proportional to 12,650.61, 18,972.61 and 3,763.55

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Solution

The fourth proportional to 12,650.61, 18,972.61 and 3,763.55 is: 5,644.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.61 : 18,972.61 = 3,763.55 : x
  2. Step 2: Convert to fraction form
    12,650.61/18,972.61 = 3,763.55/x
  3. Step 3: Cross multiply
    12,650.61x = 18,972.61 × 3,763.55
  4. Step 4: Simplify right side
    12,650.61x = 71,404,366.37
  5. Step 5: Solve for x
    x = 71,404,366.37/12,650.61
  6. Step 6: Final answer
    x = 5,644.34

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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.