Home / 18,629.47-27,944.20-4,778.47

Finding the Fourth Proportional to 18,629.47, 27,944.20 and 4,778.47

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Solution

The fourth proportional to 18,629.47, 27,944.20 and 4,778.47 is: 7,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,629.47 : 27,944.20 = 4,778.47 : x
  2. Step 2: Convert to fraction form
    18,629.47/27,944.20 = 4,778.47/x
  3. Step 3: Cross multiply
    18,629.47x = 27,944.20 × 4,778.47
  4. Step 4: Simplify right side
    18,629.47x = 133,530,521.37
  5. Step 5: Solve for x
    x = 133,530,521.37/18,629.47
  6. Step 6: Final answer
    x = 7,167.70

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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.