Home / 20,231.76-27,924.30-13,145.88

Finding the Fourth Proportional to 20,231.76, 27,924.30 and 13,145.88

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Solution

The fourth proportional to 20,231.76, 27,924.30 and 13,145.88 is: 18,144.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.76 : 27,924.30 = 13,145.88 : x
  2. Step 2: Convert to fraction form
    20,231.76/27,924.30 = 13,145.88/x
  3. Step 3: Cross multiply
    20,231.76x = 27,924.30 × 13,145.88
  4. Step 4: Simplify right side
    20,231.76x = 367,089,496.88
  5. Step 5: Solve for x
    x = 367,089,496.88/20,231.76
  6. Step 6: Final answer
    x = 18,144.22

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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.