Home / 20,131.74-27,779.43-11,633.76

Finding the Fourth Proportional to 20,131.74, 27,779.43 and 11,633.76

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Solution

The fourth proportional to 20,131.74, 27,779.43 and 11,633.76 is: 16,053.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.74 : 27,779.43 = 11,633.76 : x
  2. Step 2: Convert to fraction form
    20,131.74/27,779.43 = 11,633.76/x
  3. Step 3: Cross multiply
    20,131.74x = 27,779.43 × 11,633.76
  4. Step 4: Simplify right side
    20,131.74x = 323,179,221.56
  5. Step 5: Solve for x
    x = 323,179,221.56/20,131.74
  6. Step 6: Final answer
    x = 16,053.22

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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.