Home / 30,120.30-41,566.36-16,691.78

Finding the Fourth Proportional to 30,120.30, 41,566.36 and 16,691.78

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Solution

The fourth proportional to 30,120.30, 41,566.36 and 16,691.78 is: 23,034.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.30 : 41,566.36 = 16,691.78 : x
  2. Step 2: Convert to fraction form
    30,120.30/41,566.36 = 16,691.78/x
  3. Step 3: Cross multiply
    30,120.30x = 41,566.36 × 16,691.78
  4. Step 4: Simplify right side
    30,120.30x = 693,816,536.52
  5. Step 5: Solve for x
    x = 693,816,536.52/30,120.30
  6. Step 6: Final answer
    x = 23,034.85

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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.