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Finding the Fourth Proportional to 22,963.50, 31,591.22 and 21,979.35

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Solution

The fourth proportional to 22,963.50, 31,591.22 and 21,979.35 is: 30,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,963.50 : 31,591.22 = 21,979.35 : x
  2. Step 2: Convert to fraction form
    22,963.50/31,591.22 = 21,979.35/x
  3. Step 3: Cross multiply
    22,963.50x = 31,591.22 × 21,979.35
  4. Step 4: Simplify right side
    22,963.50x = 694,354,371.41
  5. Step 5: Solve for x
    x = 694,354,371.41/22,963.50
  6. Step 6: Final answer
    x = 30,237.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.