Home / 38,139.20-57,208.80-11,846.60

Finding the Fourth Proportional to 38,139.20, 57,208.80 and 11,846.60

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Solution

The fourth proportional to 38,139.20, 57,208.80 and 11,846.60 is: 17,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139.20 : 57,208.80 = 11,846.60 : x
  2. Step 2: Convert to fraction form
    38,139.20/57,208.80 = 11,846.60/x
  3. Step 3: Cross multiply
    38,139.20x = 57,208.80 × 11,846.60
  4. Step 4: Simplify right side
    38,139.20x = 677,729,770.08
  5. Step 5: Solve for x
    x = 677,729,770.08/38,139.20
  6. Step 6: Final answer
    x = 17,769.90

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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.