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Finding the Fourth Proportional to 15.17, 21.04 and 14.93

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Solution

The fourth proportional to 15.17, 21.04 and 14.93 is: 20.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.17 : 21.04 = 14.93 : x
  2. Step 2: Convert to fraction form
    15.17/21.04 = 14.93/x
  3. Step 3: Cross multiply
    15.17x = 21.04 × 14.93
  4. Step 4: Simplify right side
    15.17x = 314.13
  5. Step 5: Solve for x
    x = 314.13/15.17
  6. Step 6: Final answer
    x = 20.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.