Home / 20,144.91-30,214.58-5,355.03

Finding the Fourth Proportional to 20,144.91, 30,214.58 and 5,355.03

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Solution

The fourth proportional to 20,144.91, 30,214.58 and 5,355.03 is: 8,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.91 : 30,214.58 = 5,355.03 : x
  2. Step 2: Convert to fraction form
    20,144.91/30,214.58 = 5,355.03/x
  3. Step 3: Cross multiply
    20,144.91x = 30,214.58 × 5,355.03
  4. Step 4: Simplify right side
    20,144.91x = 161,799,955.56
  5. Step 5: Solve for x
    x = 161,799,955.56/20,144.91
  6. Step 6: Final answer
    x = 8,031.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.