Home / 30,121.22-41,565.40-16,691.69

Finding the Fourth Proportional to 30,121.22, 41,565.40 and 16,691.69

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Solution

The fourth proportional to 30,121.22, 41,565.40 and 16,691.69 is: 23,033.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.22 : 41,565.40 = 16,691.69 : x
  2. Step 2: Convert to fraction form
    30,121.22/41,565.40 = 16,691.69/x
  3. Step 3: Cross multiply
    30,121.22x = 41,565.40 × 16,691.69
  4. Step 4: Simplify right side
    30,121.22x = 693,796,771.53
  5. Step 5: Solve for x
    x = 693,796,771.53/30,121.22
  6. Step 6: Final answer
    x = 23,033.49

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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.