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Finding the Fourth Proportional to 18,619.03, 27,937.65 and 8,759.29

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Solution

The fourth proportional to 18,619.03, 27,937.65 and 8,759.29 is: 13,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.03 : 27,937.65 = 8,759.29 : x
  2. Step 2: Convert to fraction form
    18,619.03/27,937.65 = 8,759.29/x
  3. Step 3: Cross multiply
    18,619.03x = 27,937.65 × 8,759.29
  4. Step 4: Simplify right side
    18,619.03x = 244,713,978.27
  5. Step 5: Solve for x
    x = 244,713,978.27/18,619.03
  6. Step 6: Final answer
    x = 13,143.22

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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.