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Finding the Fourth Proportional to 38,480.70, 57,672.45 and 18,716.70

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Solution

The fourth proportional to 38,480.70, 57,672.45 and 18,716.70 is: 28,051.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.70 : 57,672.45 = 18,716.70 : x
  2. Step 2: Convert to fraction form
    38,480.70/57,672.45 = 18,716.70/x
  3. Step 3: Cross multiply
    38,480.70x = 57,672.45 × 18,716.70
  4. Step 4: Simplify right side
    38,480.70x = 1,079,437,944.92
  5. Step 5: Solve for x
    x = 1,079,437,944.92/38,480.70
  6. Step 6: Final answer
    x = 28,051.41

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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.