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Finding the Fourth Proportional to 18,259.59, 27,400.72 and 11,690.49

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Solution

The fourth proportional to 18,259.59, 27,400.72 and 11,690.49 is: 17,542.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.59 : 27,400.72 = 11,690.49 : x
  2. Step 2: Convert to fraction form
    18,259.59/27,400.72 = 11,690.49/x
  3. Step 3: Cross multiply
    18,259.59x = 27,400.72 × 11,690.49
  4. Step 4: Simplify right side
    18,259.59x = 320,327,843.15
  5. Step 5: Solve for x
    x = 320,327,843.15/18,259.59
  6. Step 6: Final answer
    x = 17,542.99

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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.