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Finding the Fourth Proportional to 14.60, 21.80 and 12.07

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Solution

The fourth proportional to 14.60, 21.80 and 12.07 is: 18.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.60 : 21.80 = 12.07 : x
  2. Step 2: Convert to fraction form
    14.60/21.80 = 12.07/x
  3. Step 3: Cross multiply
    14.60x = 21.80 × 12.07
  4. Step 4: Simplify right side
    14.60x = 263.02
  5. Step 5: Solve for x
    x = 263.02/14.60
  6. Step 6: Final answer
    x = 18.01

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Why These Related Problems?

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