Home / 36,138.36-49,861.46-20,821.16

Finding the Fourth Proportional to 36,138.36, 49,861.46 and 20,821.16

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Solution

The fourth proportional to 36,138.36, 49,861.46 and 20,821.16 is: 28,727.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.36 : 49,861.46 = 20,821.16 : x
  2. Step 2: Convert to fraction form
    36,138.36/49,861.46 = 20,821.16/x
  3. Step 3: Cross multiply
    36,138.36x = 49,861.46 × 20,821.16
  4. Step 4: Simplify right side
    36,138.36x = 1,038,173,083.08
  5. Step 5: Solve for x
    x = 1,038,173,083.08/36,138.36
  6. Step 6: Final answer
    x = 28,727.73

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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.