Home / 29.35-40.49-21.18

Finding the Fourth Proportional to 29.35, 40.49 and 21.18

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Solution

The fourth proportional to 29.35, 40.49 and 21.18 is: 29.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.35 : 40.49 = 21.18 : x
  2. Step 2: Convert to fraction form
    29.35/40.49 = 21.18/x
  3. Step 3: Cross multiply
    29.35x = 40.49 × 21.18
  4. Step 4: Simplify right side
    29.35x = 857.27
  5. Step 5: Solve for x
    x = 857.27/29.35
  6. Step 6: Final answer
    x = 29.21

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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.