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Finding the Fourth Proportional to 14.80, 22.09 and 13.12

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Solution

The fourth proportional to 14.80, 22.09 and 13.12 is: 19.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.80 : 22.09 = 13.12 : x
  2. Step 2: Convert to fraction form
    14.80/22.09 = 13.12/x
  3. Step 3: Cross multiply
    14.80x = 22.09 × 13.12
  4. Step 4: Simplify right side
    14.80x = 289.82
  5. Step 5: Solve for x
    x = 289.82/14.80
  6. Step 6: Final answer
    x = 19.58

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.