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Finding the Fourth Proportional to 36,857.81, 50,865.55 and 20,730.17

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Solution

The fourth proportional to 36,857.81, 50,865.55 and 20,730.17 is: 28,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,857.81 : 50,865.55 = 20,730.17 : x
  2. Step 2: Convert to fraction form
    36,857.81/50,865.55 = 20,730.17/x
  3. Step 3: Cross multiply
    36,857.81x = 50,865.55 × 20,730.17
  4. Step 4: Simplify right side
    36,857.81x = 1,054,451,319.65
  5. Step 5: Solve for x
    x = 1,054,451,319.65/36,857.81
  6. Step 6: Final answer
    x = 28,608.63

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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.