Home / 20,231.74-27,918.75-11,158.59

Finding the Fourth Proportional to 20,231.74, 27,918.75 and 11,158.59

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Solution

The fourth proportional to 20,231.74, 27,918.75 and 11,158.59 is: 15,398.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.74 : 27,918.75 = 11,158.59 : x
  2. Step 2: Convert to fraction form
    20,231.74/27,918.75 = 11,158.59/x
  3. Step 3: Cross multiply
    20,231.74x = 27,918.75 × 11,158.59
  4. Step 4: Simplify right side
    20,231.74x = 311,533,884.56
  5. Step 5: Solve for x
    x = 311,533,884.56/20,231.74
  6. Step 6: Final answer
    x = 15,398.27

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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.