Home / 32,911.20-45,399-20,170.56

Finding the Fourth Proportional to 32,911.20, 45,399 and 20,170.56

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Solution

The fourth proportional to 32,911.20, 45,399 and 20,170.56 is: 27,824.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,911.20 : 45,399 = 20,170.56 : x
  2. Step 2: Convert to fraction form
    32,911.20/45,399 = 20,170.56/x
  3. Step 3: Cross multiply
    32,911.20x = 45,399 × 20,170.56
  4. Step 4: Simplify right side
    32,911.20x = 915,723,253.44
  5. Step 5: Solve for x
    x = 915,723,253.44/32,911.20
  6. Step 6: Final answer
    x = 27,824.06

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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.