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Finding the Fourth Proportional to 23.39, 32.25 and 19.70

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Solution

The fourth proportional to 23.39, 32.25 and 19.70 is: 27.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.39 : 32.25 = 19.70 : x
  2. Step 2: Convert to fraction form
    23.39/32.25 = 19.70/x
  3. Step 3: Cross multiply
    23.39x = 32.25 × 19.70
  4. Step 4: Simplify right side
    23.39x = 635.33
  5. Step 5: Solve for x
    x = 635.33/23.39
  6. Step 6: Final answer
    x = 27.16

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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.