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Finding the Fourth Proportional to 14.24, 21.26 and 12.95

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Solution

The fourth proportional to 14.24, 21.26 and 12.95 is: 19.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.24 : 21.26 = 12.95 : x
  2. Step 2: Convert to fraction form
    14.24/21.26 = 12.95/x
  3. Step 3: Cross multiply
    14.24x = 21.26 × 12.95
  4. Step 4: Simplify right side
    14.24x = 275.31
  5. Step 5: Solve for x
    x = 275.31/14.24
  6. Step 6: Final answer
    x = 19.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.