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Finding the Fourth Proportional to 14.06, 19.42 and 11.77

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Solution

The fourth proportional to 14.06, 19.42 and 11.77 is: 16.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.06 : 19.42 = 11.77 : x
  2. Step 2: Convert to fraction form
    14.06/19.42 = 11.77/x
  3. Step 3: Cross multiply
    14.06x = 19.42 × 11.77
  4. Step 4: Simplify right side
    14.06x = 228.50
  5. Step 5: Solve for x
    x = 228.50/14.06
  6. Step 6: Final answer
    x = 16.25

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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.