Home / 20,057.74-27,678.68-11,105.08

Finding the Fourth Proportional to 20,057.74, 27,678.68 and 11,105.08

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Solution

The fourth proportional to 20,057.74, 27,678.68 and 11,105.08 is: 15,324.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.74 : 27,678.68 = 11,105.08 : x
  2. Step 2: Convert to fraction form
    20,057.74/27,678.68 = 11,105.08/x
  3. Step 3: Cross multiply
    20,057.74x = 27,678.68 × 11,105.08
  4. Step 4: Simplify right side
    20,057.74x = 307,373,955.69
  5. Step 5: Solve for x
    x = 307,373,955.69/20,057.74
  6. Step 6: Final answer
    x = 15,324.46

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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.