Home / 20,279.79-27,984.96-11,327.85

Finding the Fourth Proportional to 20,279.79, 27,984.96 and 11,327.85

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Solution

The fourth proportional to 20,279.79, 27,984.96 and 11,327.85 is: 15,631.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.79 : 27,984.96 = 11,327.85 : x
  2. Step 2: Convert to fraction form
    20,279.79/27,984.96 = 11,327.85/x
  3. Step 3: Cross multiply
    20,279.79x = 27,984.96 × 11,327.85
  4. Step 4: Simplify right side
    20,279.79x = 317,009,429.14
  5. Step 5: Solve for x
    x = 317,009,429.14/20,279.79
  6. Step 6: Final answer
    x = 15,631.79

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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.