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Finding the Fourth Proportional to 14.03, 19.36 and 7.89

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Solution

The fourth proportional to 14.03, 19.36 and 7.89 is: 10.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.03 : 19.36 = 7.89 : x
  2. Step 2: Convert to fraction form
    14.03/19.36 = 7.89/x
  3. Step 3: Cross multiply
    14.03x = 19.36 × 7.89
  4. Step 4: Simplify right side
    14.03x = 152.66
  5. Step 5: Solve for x
    x = 152.66/14.03
  6. Step 6: Final answer
    x = 10.88

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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.