Home / 20,132.42-27,783.98-11,179.98

Finding the Fourth Proportional to 20,132.42, 27,783.98 and 11,179.98

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Solution

The fourth proportional to 20,132.42, 27,783.98 and 11,179.98 is: 15,429.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.42 : 27,783.98 = 11,179.98 : x
  2. Step 2: Convert to fraction form
    20,132.42/27,783.98 = 11,179.98/x
  3. Step 3: Cross multiply
    20,132.42x = 27,783.98 × 11,179.98
  4. Step 4: Simplify right side
    20,132.42x = 310,624,326.75
  5. Step 5: Solve for x
    x = 310,624,326.75/20,132.42
  6. Step 6: Final answer
    x = 15,429.06

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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.