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Finding the Fourth Proportional to 22,893.80, 34,340.70 and 21,144.20

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Solution

The fourth proportional to 22,893.80, 34,340.70 and 21,144.20 is: 31,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,893.80 : 34,340.70 = 21,144.20 : x
  2. Step 2: Convert to fraction form
    22,893.80/34,340.70 = 21,144.20/x
  3. Step 3: Cross multiply
    22,893.80x = 34,340.70 × 21,144.20
  4. Step 4: Simplify right side
    22,893.80x = 726,106,628.94
  5. Step 5: Solve for x
    x = 726,106,628.94/22,893.80
  6. Step 6: Final answer
    x = 31,716.30

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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.