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Finding the Fourth Proportional to 18,958.59, 28,462.49 and 14,579.12

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Solution

The fourth proportional to 18,958.59, 28,462.49 and 14,579.12 is: 21,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,958.59 : 28,462.49 = 14,579.12 : x
  2. Step 2: Convert to fraction form
    18,958.59/28,462.49 = 14,579.12/x
  3. Step 3: Cross multiply
    18,958.59x = 28,462.49 × 14,579.12
  4. Step 4: Simplify right side
    18,958.59x = 414,958,110.14
  5. Step 5: Solve for x
    x = 414,958,110.14/18,958.59
  6. Step 6: Final answer
    x = 21,887.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.