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Finding the Fourth Proportional to 22,012.20, 32,960.70 and 20,975.40

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Solution

The fourth proportional to 22,012.20, 32,960.70 and 20,975.40 is: 31,408.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,012.20 : 32,960.70 = 20,975.40 : x
  2. Step 2: Convert to fraction form
    22,012.20/32,960.70 = 20,975.40/x
  3. Step 3: Cross multiply
    22,012.20x = 32,960.70 × 20,975.40
  4. Step 4: Simplify right side
    22,012.20x = 691,363,866.78
  5. Step 5: Solve for x
    x = 691,363,866.78/22,012.20
  6. Step 6: Final answer
    x = 31,408.21

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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.