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Finding the Fourth Proportional to 36,901.88, 50,924.32 and 20,986.31

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Solution

The fourth proportional to 36,901.88, 50,924.32 and 20,986.31 is: 28,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,901.88 : 50,924.32 = 20,986.31 : x
  2. Step 2: Convert to fraction form
    36,901.88/50,924.32 = 20,986.31/x
  3. Step 3: Cross multiply
    36,901.88x = 50,924.32 × 20,986.31
  4. Step 4: Simplify right side
    36,901.88x = 1,068,713,258.97
  5. Step 5: Solve for x
    x = 1,068,713,258.97/36,901.88
  6. Step 6: Final answer
    x = 28,960.95

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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.