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Finding the Fourth Proportional to 16,997.80, 25,487.93 and 7,629.78

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Solution

The fourth proportional to 16,997.80, 25,487.93 and 7,629.78 is: 11,440.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,997.80 : 25,487.93 = 7,629.78 : x
  2. Step 2: Convert to fraction form
    16,997.80/25,487.93 = 7,629.78/x
  3. Step 3: Cross multiply
    16,997.80x = 25,487.93 × 7,629.78
  4. Step 4: Simplify right side
    16,997.80x = 194,467,317.63
  5. Step 5: Solve for x
    x = 194,467,317.63/16,997.80
  6. Step 6: Final answer
    x = 11,440.74

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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.