Home / 20,148.20-30,217.73-7,663.77

Finding the Fourth Proportional to 20,148.20, 30,217.73 and 7,663.77

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Solution

The fourth proportional to 20,148.20, 30,217.73 and 7,663.77 is: 11,493.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.20 : 30,217.73 = 7,663.77 : x
  2. Step 2: Convert to fraction form
    20,148.20/30,217.73 = 7,663.77/x
  3. Step 3: Cross multiply
    20,148.20x = 30,217.73 × 7,663.77
  4. Step 4: Simplify right side
    20,148.20x = 231,581,732.64
  5. Step 5: Solve for x
    x = 231,581,732.64/20,148.20
  6. Step 6: Final answer
    x = 11,493.92

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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.