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Finding the Fourth Proportional to 16.76, 23.15 and 14.57

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Solution

The fourth proportional to 16.76, 23.15 and 14.57 is: 20.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.76 : 23.15 = 14.57 : x
  2. Step 2: Convert to fraction form
    16.76/23.15 = 14.57/x
  3. Step 3: Cross multiply
    16.76x = 23.15 × 14.57
  4. Step 4: Simplify right side
    16.76x = 337.30
  5. Step 5: Solve for x
    x = 337.30/16.76
  6. Step 6: Final answer
    x = 20.13

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Find fourth proportional to 8.38, 11.58 and 7.29
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1.5x scale

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.