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Finding the Fourth Proportional to 18,513.59, 27,770.36 and 4,662.59

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Solution

The fourth proportional to 18,513.59, 27,770.36 and 4,662.59 is: 6,993.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.59 : 27,770.36 = 4,662.59 : x
  2. Step 2: Convert to fraction form
    18,513.59/27,770.36 = 4,662.59/x
  3. Step 3: Cross multiply
    18,513.59x = 27,770.36 × 4,662.59
  4. Step 4: Simplify right side
    18,513.59x = 129,481,779.52
  5. Step 5: Solve for x
    x = 129,481,779.52/18,513.59
  6. Step 6: Final answer
    x = 6,993.88

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1.5x scale

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.