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Finding the Fourth Proportional to 36,604.80, 50,515.50 and 20,689.31

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Solution

The fourth proportional to 36,604.80, 50,515.50 and 20,689.31 is: 28,551.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,604.80 : 50,515.50 = 20,689.31 : x
  2. Step 2: Convert to fraction form
    36,604.80/50,515.50 = 20,689.31/x
  3. Step 3: Cross multiply
    36,604.80x = 50,515.50 × 20,689.31
  4. Step 4: Simplify right side
    36,604.80x = 1,045,130,586.73
  5. Step 5: Solve for x
    x = 1,045,130,586.73/36,604.80
  6. Step 6: Final answer
    x = 28,551.74

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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.