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Finding the Fourth Proportional to 19.48, 29.15 and 13.08

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Solution

The fourth proportional to 19.48, 29.15 and 13.08 is: 19.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.48 : 29.15 = 13.08 : x
  2. Step 2: Convert to fraction form
    19.48/29.15 = 13.08/x
  3. Step 3: Cross multiply
    19.48x = 29.15 × 13.08
  4. Step 4: Simplify right side
    19.48x = 381.21
  5. Step 5: Solve for x
    x = 381.21/19.48
  6. Step 6: Final answer
    x = 19.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.