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Finding the Fourth Proportional to 22,009.85, 30,379.82 and 18,040.44

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Solution

The fourth proportional to 22,009.85, 30,379.82 and 18,040.44 is: 24,900.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,009.85 : 30,379.82 = 18,040.44 : x
  2. Step 2: Convert to fraction form
    22,009.85/30,379.82 = 18,040.44/x
  3. Step 3: Cross multiply
    22,009.85x = 30,379.82 × 18,040.44
  4. Step 4: Simplify right side
    22,009.85x = 548,065,319.92
  5. Step 5: Solve for x
    x = 548,065,319.92/22,009.85
  6. Step 6: Final answer
    x = 24,900.91

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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.