Home / 38,405.79-57,608.69-12,112.58

Finding the Fourth Proportional to 38,405.79, 57,608.69 and 12,112.58

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Solution

The fourth proportional to 38,405.79, 57,608.69 and 12,112.58 is: 18,168.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,405.79 : 57,608.69 = 12,112.58 : x
  2. Step 2: Convert to fraction form
    38,405.79/57,608.69 = 12,112.58/x
  3. Step 3: Cross multiply
    38,405.79x = 57,608.69 × 12,112.58
  4. Step 4: Simplify right side
    38,405.79x = 697,789,517.71
  5. Step 5: Solve for x
    x = 697,789,517.71/38,405.79
  6. Step 6: Final answer
    x = 18,168.86

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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.