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Finding the Fourth Proportional to 37,274.65, 55,789.79 and 20,381.78

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Solution

The fourth proportional to 37,274.65, 55,789.79 and 20,381.78 is: 30,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,274.65 : 55,789.79 = 20,381.78 : x
  2. Step 2: Convert to fraction form
    37,274.65/55,789.79 = 20,381.78/x
  3. Step 3: Cross multiply
    37,274.65x = 55,789.79 × 20,381.78
  4. Step 4: Simplify right side
    37,274.65x = 1,137,095,263.59
  5. Step 5: Solve for x
    x = 1,137,095,263.59/37,274.65
  6. Step 6: Final answer
    x = 30,505.86

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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.