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Finding the Fourth Proportional to 30,177.60, 45,273.60 and 15,388.80

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Solution

The fourth proportional to 30,177.60, 45,273.60 and 15,388.80 is: 23,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,177.60 : 45,273.60 = 15,388.80 : x
  2. Step 2: Convert to fraction form
    30,177.60/45,273.60 = 15,388.80/x
  3. Step 3: Cross multiply
    30,177.60x = 45,273.60 × 15,388.80
  4. Step 4: Simplify right side
    30,177.60x = 696,706,375.68
  5. Step 5: Solve for x
    x = 696,706,375.68/30,177.60
  6. Step 6: Final answer
    x = 23,086.87

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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.