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Finding the Fourth Proportional to 18,519.88, 27,767.44 and 10,203.88

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Solution

The fourth proportional to 18,519.88, 27,767.44 and 10,203.88 is: 15,299.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.88 : 27,767.44 = 10,203.88 : x
  2. Step 2: Convert to fraction form
    18,519.88/27,767.44 = 10,203.88/x
  3. Step 3: Cross multiply
    18,519.88x = 27,767.44 × 10,203.88
  4. Step 4: Simplify right side
    18,519.88x = 283,335,625.67
  5. Step 5: Solve for x
    x = 283,335,625.67/18,519.88
  6. Step 6: Final answer
    x = 15,299.00

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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.