Home / 20,118.80-27,757.51-11,619.80

Finding the Fourth Proportional to 20,118.80, 27,757.51 and 11,619.80

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Solution

The fourth proportional to 20,118.80, 27,757.51 and 11,619.80 is: 16,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.80 : 27,757.51 = 11,619.80 : x
  2. Step 2: Convert to fraction form
    20,118.80/27,757.51 = 11,619.80/x
  3. Step 3: Cross multiply
    20,118.80x = 27,757.51 × 11,619.80
  4. Step 4: Simplify right side
    20,118.80x = 322,536,517.81
  5. Step 5: Solve for x
    x = 322,536,517.81/20,118.80
  6. Step 6: Final answer
    x = 16,031.60

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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.