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Finding the Fourth Proportional to 16,745.20, 25,096.20 and 12,830.20

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Solution

The fourth proportional to 16,745.20, 25,096.20 and 12,830.20 is: 19,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,745.20 : 25,096.20 = 12,830.20 : x
  2. Step 2: Convert to fraction form
    16,745.20/25,096.20 = 12,830.20/x
  3. Step 3: Cross multiply
    16,745.20x = 25,096.20 × 12,830.20
  4. Step 4: Simplify right side
    16,745.20x = 321,989,265.24
  5. Step 5: Solve for x
    x = 321,989,265.24/16,745.20
  6. Step 6: Final answer
    x = 19,228.75

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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.