Home / 30,379.86-41,922.78-22,419.18

Finding the Fourth Proportional to 30,379.86, 41,922.78 and 22,419.18

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Solution

The fourth proportional to 30,379.86, 41,922.78 and 22,419.18 is: 30,937.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.86 : 41,922.78 = 22,419.18 : x
  2. Step 2: Convert to fraction form
    30,379.86/41,922.78 = 22,419.18/x
  3. Step 3: Cross multiply
    30,379.86x = 41,922.78 × 22,419.18
  4. Step 4: Simplify right side
    30,379.86x = 939,874,350.92
  5. Step 5: Solve for x
    x = 939,874,350.92/30,379.86
  6. Step 6: Final answer
    x = 30,937.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.