Home / 20,039.94-27,667.67-12,872.75

Finding the Fourth Proportional to 20,039.94, 27,667.67 and 12,872.75

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Solution

The fourth proportional to 20,039.94, 27,667.67 and 12,872.75 is: 17,772.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.94 : 27,667.67 = 12,872.75 : x
  2. Step 2: Convert to fraction form
    20,039.94/27,667.67 = 12,872.75/x
  3. Step 3: Cross multiply
    20,039.94x = 27,667.67 × 12,872.75
  4. Step 4: Simplify right side
    20,039.94x = 356,158,796.29
  5. Step 5: Solve for x
    x = 356,158,796.29/20,039.94
  6. Step 6: Final answer
    x = 17,772.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.