Home / 38,128.80-57,198.72-11,835.66

Finding the Fourth Proportional to 38,128.80, 57,198.72 and 11,835.66

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Solution

The fourth proportional to 38,128.80, 57,198.72 and 11,835.66 is: 17,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,128.80 : 57,198.72 = 11,835.66 : x
  2. Step 2: Convert to fraction form
    38,128.80/57,198.72 = 11,835.66/x
  3. Step 3: Cross multiply
    38,128.80x = 57,198.72 × 11,835.66
  4. Step 4: Simplify right side
    38,128.80x = 676,984,602.36
  5. Step 5: Solve for x
    x = 676,984,602.36/38,128.80
  6. Step 6: Final answer
    x = 17,755.20

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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.