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Finding the Fourth Proportional to 18,057.44, 27,039.84 and 12,502.88

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Solution

The fourth proportional to 18,057.44, 27,039.84 and 12,502.88 is: 18,722.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,057.44 : 27,039.84 = 12,502.88 : x
  2. Step 2: Convert to fraction form
    18,057.44/27,039.84 = 12,502.88/x
  3. Step 3: Cross multiply
    18,057.44x = 27,039.84 × 12,502.88
  4. Step 4: Simplify right side
    18,057.44x = 338,075,874.74
  5. Step 5: Solve for x
    x = 338,075,874.74/18,057.44
  6. Step 6: Final answer
    x = 18,722.25

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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.