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Finding the Fourth Proportional to 26, 35.90 and 17.81

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Solution

The fourth proportional to 26, 35.90 and 17.81 is: 24.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    26 : 35.90 = 17.81 : x
  2. Step 2: Convert to fraction form
    26/35.90 = 17.81/x
  3. Step 3: Cross multiply
    26x = 35.90 × 17.81
  4. Step 4: Simplify right side
    26x = 639.38
  5. Step 5: Solve for x
    x = 639.38/26
  6. Step 6: Final answer
    x = 24.59

Related Problems

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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.