Home / 38,106.80-57,160.20-11,819.60

Finding the Fourth Proportional to 38,106.80, 57,160.20 and 11,819.60

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Solution

The fourth proportional to 38,106.80, 57,160.20 and 11,819.60 is: 17,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,106.80 : 57,160.20 = 11,819.60 : x
  2. Step 2: Convert to fraction form
    38,106.80/57,160.20 = 11,819.60/x
  3. Step 3: Cross multiply
    38,106.80x = 57,160.20 × 11,819.60
  4. Step 4: Simplify right side
    38,106.80x = 675,610,699.92
  5. Step 5: Solve for x
    x = 675,610,699.92/38,106.80
  6. Step 6: Final answer
    x = 17,729.40

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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.