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Finding the Fourth Proportional to 22,496.80, 33,745.20 and 6,912.40

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Solution

The fourth proportional to 22,496.80, 33,745.20 and 6,912.40 is: 10,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,496.80 : 33,745.20 = 6,912.40 : x
  2. Step 2: Convert to fraction form
    22,496.80/33,745.20 = 6,912.40/x
  3. Step 3: Cross multiply
    22,496.80x = 33,745.20 × 6,912.40
  4. Step 4: Simplify right side
    22,496.80x = 233,260,320.48
  5. Step 5: Solve for x
    x = 233,260,320.48/22,496.80
  6. Step 6: Final answer
    x = 10,368.60

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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.