Home / 20,442.55-30,663.82-6,403.68

Finding the Fourth Proportional to 20,442.55, 30,663.82 and 6,403.68

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Solution

The fourth proportional to 20,442.55, 30,663.82 and 6,403.68 is: 9,605.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.55 : 30,663.82 = 6,403.68 : x
  2. Step 2: Convert to fraction form
    20,442.55/30,663.82 = 6,403.68/x
  3. Step 3: Cross multiply
    20,442.55x = 30,663.82 × 6,403.68
  4. Step 4: Simplify right side
    20,442.55x = 196,361,290.86
  5. Step 5: Solve for x
    x = 196,361,290.86/20,442.55
  6. Step 6: Final answer
    x = 9,605.52

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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.