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Finding the Fourth Proportional to 12,672.18, 19,008.27 and 3,906.90

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Solution

The fourth proportional to 12,672.18, 19,008.27 and 3,906.90 is: 5,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.18 : 19,008.27 = 3,906.90 : x
  2. Step 2: Convert to fraction form
    12,672.18/19,008.27 = 3,906.90/x
  3. Step 3: Cross multiply
    12,672.18x = 19,008.27 × 3,906.90
  4. Step 4: Simplify right side
    12,672.18x = 74,263,410.06
  5. Step 5: Solve for x
    x = 74,263,410.06/12,672.18
  6. Step 6: Final answer
    x = 5,860.35

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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.