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Finding the Fourth Proportional to 22,019.58, 32,972.27 and 12,138.39

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Solution

The fourth proportional to 22,019.58, 32,972.27 and 12,138.39 is: 18,176.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,019.58 : 32,972.27 = 12,138.39 : x
  2. Step 2: Convert to fraction form
    22,019.58/32,972.27 = 12,138.39/x
  3. Step 3: Cross multiply
    22,019.58x = 32,972.27 × 12,138.39
  4. Step 4: Simplify right side
    22,019.58x = 400,230,211.75
  5. Step 5: Solve for x
    x = 400,230,211.75/22,019.58
  6. Step 6: Final answer
    x = 18,176.11

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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.