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Finding the Fourth Proportional to 37,385.91, 51,591.78 and 20,618.91

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Solution

The fourth proportional to 37,385.91, 51,591.78 and 20,618.91 is: 28,453.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,385.91 : 51,591.78 = 20,618.91 : x
  2. Step 2: Convert to fraction form
    37,385.91/51,591.78 = 20,618.91/x
  3. Step 3: Cross multiply
    37,385.91x = 51,591.78 × 20,618.91
  4. Step 4: Simplify right side
    37,385.91x = 1,063,766,268.56
  5. Step 5: Solve for x
    x = 1,063,766,268.56/37,385.91
  6. Step 6: Final answer
    x = 28,453.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.