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Finding the Fourth Proportional to 14.19, 19.62 and 12.98

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Solution

The fourth proportional to 14.19, 19.62 and 12.98 is: 17.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.19 : 19.62 = 12.98 : x
  2. Step 2: Convert to fraction form
    14.19/19.62 = 12.98/x
  3. Step 3: Cross multiply
    14.19x = 19.62 × 12.98
  4. Step 4: Simplify right side
    14.19x = 254.67
  5. Step 5: Solve for x
    x = 254.67/14.19
  6. Step 6: Final answer
    x = 17.95

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1.5x scale

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.