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Finding the Fourth Proportional to 18,637.80, 27,883.80 and 12,076.80

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Solution

The fourth proportional to 18,637.80, 27,883.80 and 12,076.80 is: 18,067.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.80 : 27,883.80 = 12,076.80 : x
  2. Step 2: Convert to fraction form
    18,637.80/27,883.80 = 12,076.80/x
  3. Step 3: Cross multiply
    18,637.80x = 27,883.80 × 12,076.80
  4. Step 4: Simplify right side
    18,637.80x = 336,747,075.84
  5. Step 5: Solve for x
    x = 336,747,075.84/18,637.80
  6. Step 6: Final answer
    x = 18,067.96

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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.