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Finding the Fourth Proportional to 36,701.64, 50,631.90 and 21,789

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Solution

The fourth proportional to 36,701.64, 50,631.90 and 21,789 is: 30,059.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,701.64 : 50,631.90 = 21,789 : x
  2. Step 2: Convert to fraction form
    36,701.64/50,631.90 = 21,789/x
  3. Step 3: Cross multiply
    36,701.64x = 50,631.90 × 21,789
  4. Step 4: Simplify right side
    36,701.64x = 1,103,218,469.10
  5. Step 5: Solve for x
    x = 1,103,218,469.10/36,701.64
  6. Step 6: Final answer
    x = 30,059.11

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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.