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Finding the Fourth Proportional to 18.73, 25.71 and 17.19

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Solution

The fourth proportional to 18.73, 25.71 and 17.19 is: 23.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.73 : 25.71 = 17.19 : x
  2. Step 2: Convert to fraction form
    18.73/25.71 = 17.19/x
  3. Step 3: Cross multiply
    18.73x = 25.71 × 17.19
  4. Step 4: Simplify right side
    18.73x = 442.05
  5. Step 5: Solve for x
    x = 442.05/18.73
  6. Step 6: Final answer
    x = 23.60

Related Problems

Find fourth proportional to 9.37, 12.86 and 8.60
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.