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Finding the Fourth Proportional to 21,219.58, 29,262.90 and 16,174.90

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Solution

The fourth proportional to 21,219.58, 29,262.90 and 16,174.90 is: 22,306.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.58 : 29,262.90 = 16,174.90 : x
  2. Step 2: Convert to fraction form
    21,219.58/29,262.90 = 16,174.90/x
  3. Step 3: Cross multiply
    21,219.58x = 29,262.90 × 16,174.90
  4. Step 4: Simplify right side
    21,219.58x = 473,324,481.21
  5. Step 5: Solve for x
    x = 473,324,481.21/21,219.58
  6. Step 6: Final answer
    x = 22,306.02

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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.