Home / 20,091.40-27,720.38-11,592.84

Finding the Fourth Proportional to 20,091.40, 27,720.38 and 11,592.84

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Solution

The fourth proportional to 20,091.40, 27,720.38 and 11,592.84 is: 15,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.40 : 27,720.38 = 11,592.84 : x
  2. Step 2: Convert to fraction form
    20,091.40/27,720.38 = 11,592.84/x
  3. Step 3: Cross multiply
    20,091.40x = 27,720.38 × 11,592.84
  4. Step 4: Simplify right side
    20,091.40x = 321,357,930.08
  5. Step 5: Solve for x
    x = 321,357,930.08/20,091.40
  6. Step 6: Final answer
    x = 15,994.80

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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.