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Finding the Fourth Proportional to 16,618.88, 22,912 and 13,775.52

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Solution

The fourth proportional to 16,618.88, 22,912 and 13,775.52 is: 18,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,618.88 : 22,912 = 13,775.52 : x
  2. Step 2: Convert to fraction form
    16,618.88/22,912 = 13,775.52/x
  3. Step 3: Cross multiply
    16,618.88x = 22,912 × 13,775.52
  4. Step 4: Simplify right side
    16,618.88x = 315,624,714.24
  5. Step 5: Solve for x
    x = 315,624,714.24/16,618.88
  6. Step 6: Final answer
    x = 18,991.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.