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Finding the Fourth Proportional to 19.71, 27 and 19.24

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Solution

The fourth proportional to 19.71, 27 and 19.24 is: 26.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.71 : 27 = 19.24 : x
  2. Step 2: Convert to fraction form
    19.71/27 = 19.24/x
  3. Step 3: Cross multiply
    19.71x = 27 × 19.24
  4. Step 4: Simplify right side
    19.71x = 519.41
  5. Step 5: Solve for x
    x = 519.41/19.71
  6. Step 6: Final answer
    x = 26.35

Related Problems

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Similar ratio
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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.