Home / 20,327.66-28,053.35-11,375.09

Finding the Fourth Proportional to 20,327.66, 28,053.35 and 11,375.09

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Solution

The fourth proportional to 20,327.66, 28,053.35 and 11,375.09 is: 15,698.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,327.66 : 28,053.35 = 11,375.09 : x
  2. Step 2: Convert to fraction form
    20,327.66/28,053.35 = 11,375.09/x
  3. Step 3: Cross multiply
    20,327.66x = 28,053.35 × 11,375.09
  4. Step 4: Simplify right side
    20,327.66x = 319,109,381.05
  5. Step 5: Solve for x
    x = 319,109,381.05/20,327.66
  6. Step 6: Final answer
    x = 15,698.28

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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.