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Finding the Fourth Proportional to 26.12, 36.07 and 15.21

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Solution

The fourth proportional to 26.12, 36.07 and 15.21 is: 21.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.12 : 36.07 = 15.21 : x
  2. Step 2: Convert to fraction form
    26.12/36.07 = 15.21/x
  3. Step 3: Cross multiply
    26.12x = 36.07 × 15.21
  4. Step 4: Simplify right side
    26.12x = 548.59
  5. Step 5: Solve for x
    x = 548.59/26.12
  6. Step 6: Final answer
    x = 21.00

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