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Finding the Fourth Proportional to 18,047.21, 24,879.56 and 15,933.11

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Solution

The fourth proportional to 18,047.21, 24,879.56 and 15,933.11 is: 21,965.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,047.21 : 24,879.56 = 15,933.11 : x
  2. Step 2: Convert to fraction form
    18,047.21/24,879.56 = 15,933.11/x
  3. Step 3: Cross multiply
    18,047.21x = 24,879.56 × 15,933.11
  4. Step 4: Simplify right side
    18,047.21x = 396,408,562.17
  5. Step 5: Solve for x
    x = 396,408,562.17/18,047.21
  6. Step 6: Final answer
    x = 21,965.09

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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.