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Finding the Fourth Proportional to 36,515.88, 50,391.72 and 20,605.50

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Solution

The fourth proportional to 36,515.88, 50,391.72 and 20,605.50 is: 28,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,515.88 : 50,391.72 = 20,605.50 : x
  2. Step 2: Convert to fraction form
    36,515.88/50,391.72 = 20,605.50/x
  3. Step 3: Cross multiply
    36,515.88x = 50,391.72 × 20,605.50
  4. Step 4: Simplify right side
    36,515.88x = 1,038,346,586.46
  5. Step 5: Solve for x
    x = 1,038,346,586.46/36,515.88
  6. Step 6: Final answer
    x = 28,435.48

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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.