Home / 20,090.70-27,719.55-11,705.58

Finding the Fourth Proportional to 20,090.70, 27,719.55 and 11,705.58

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Solution

The fourth proportional to 20,090.70, 27,719.55 and 11,705.58 is: 16,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.70 : 27,719.55 = 11,705.58 : x
  2. Step 2: Convert to fraction form
    20,090.70/27,719.55 = 11,705.58/x
  3. Step 3: Cross multiply
    20,090.70x = 27,719.55 × 11,705.58
  4. Step 4: Simplify right side
    20,090.70x = 324,473,410.09
  5. Step 5: Solve for x
    x = 324,473,410.09/20,090.70
  6. Step 6: Final answer
    x = 16,150.43

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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.