Home / 20,243.55-30,365.23-5,451.20

Finding the Fourth Proportional to 20,243.55, 30,365.23 and 5,451.20

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Solution

The fourth proportional to 20,243.55, 30,365.23 and 5,451.20 is: 8,176.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.55 : 30,365.23 = 5,451.20 : x
  2. Step 2: Convert to fraction form
    20,243.55/30,365.23 = 5,451.20/x
  3. Step 3: Cross multiply
    20,243.55x = 30,365.23 × 5,451.20
  4. Step 4: Simplify right side
    20,243.55x = 165,526,941.78
  5. Step 5: Solve for x
    x = 165,526,941.78/20,243.55
  6. Step 6: Final answer
    x = 8,176.77

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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.