Home / 20,221.79-30,334.84-7,752.38

Finding the Fourth Proportional to 20,221.79, 30,334.84 and 7,752.38

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Solution

The fourth proportional to 20,221.79, 30,334.84 and 7,752.38 is: 11,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.79 : 30,334.84 = 7,752.38 : x
  2. Step 2: Convert to fraction form
    20,221.79/30,334.84 = 7,752.38/x
  3. Step 3: Cross multiply
    20,221.79x = 30,334.84 × 7,752.38
  4. Step 4: Simplify right side
    20,221.79x = 235,167,035.86
  5. Step 5: Solve for x
    x = 235,167,035.86/20,221.79
  6. Step 6: Final answer
    x = 11,629.39

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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.