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Finding the Fourth Proportional to 16,906.90, 25,360.35 and 12,775.90

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Solution

The fourth proportional to 16,906.90, 25,360.35 and 12,775.90 is: 19,163.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,906.90 : 25,360.35 = 12,775.90 : x
  2. Step 2: Convert to fraction form
    16,906.90/25,360.35 = 12,775.90/x
  3. Step 3: Cross multiply
    16,906.90x = 25,360.35 × 12,775.90
  4. Step 4: Simplify right side
    16,906.90x = 324,001,295.57
  5. Step 5: Solve for x
    x = 324,001,295.57/16,906.90
  6. Step 6: Final answer
    x = 19,163.85

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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.