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Finding the Fourth Proportional to 22,811.20, 34,220.40 and 7,230.40

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Solution

The fourth proportional to 22,811.20, 34,220.40 and 7,230.40 is: 10,846.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,811.20 : 34,220.40 = 7,230.40 : x
  2. Step 2: Convert to fraction form
    22,811.20/34,220.40 = 7,230.40/x
  3. Step 3: Cross multiply
    22,811.20x = 34,220.40 × 7,230.40
  4. Step 4: Simplify right side
    22,811.20x = 247,427,180.16
  5. Step 5: Solve for x
    x = 247,427,180.16/22,811.20
  6. Step 6: Final answer
    x = 10,846.74

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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.