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Finding the Fourth Proportional to 18,635.99, 27,917.09 and 12,066.80

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Solution

The fourth proportional to 18,635.99, 27,917.09 and 12,066.80 is: 18,076.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.99 : 27,917.09 = 12,066.80 : x
  2. Step 2: Convert to fraction form
    18,635.99/27,917.09 = 12,066.80/x
  3. Step 3: Cross multiply
    18,635.99x = 27,917.09 × 12,066.80
  4. Step 4: Simplify right side
    18,635.99x = 336,869,881.28
  5. Step 5: Solve for x
    x = 336,869,881.28/18,635.99
  6. Step 6: Final answer
    x = 18,076.31

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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.