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Finding the Fourth Proportional to 26.19, 36.13 and 15.27

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Solution

The fourth proportional to 26.19, 36.13 and 15.27 is: 21.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.19 : 36.13 = 15.27 : x
  2. Step 2: Convert to fraction form
    26.19/36.13 = 15.27/x
  3. Step 3: Cross multiply
    26.19x = 36.13 × 15.27
  4. Step 4: Simplify right side
    26.19x = 551.71
  5. Step 5: Solve for x
    x = 551.71/26.19
  6. Step 6: Final answer
    x = 21.07

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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.