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Finding the Fourth Proportional to 14,679, 20,257.02 and 8,055

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Solution

The fourth proportional to 14,679, 20,257.02 and 8,055 is: 11,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679 : 20,257.02 = 8,055 : x
  2. Step 2: Convert to fraction form
    14,679/20,257.02 = 8,055/x
  3. Step 3: Cross multiply
    14,679x = 20,257.02 × 8,055
  4. Step 4: Simplify right side
    14,679x = 163,170,296.10
  5. Step 5: Solve for x
    x = 163,170,296.10/14,679
  6. Step 6: Final answer
    x = 11,115.90

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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.