Home / 36,138.16-49,861.20-20,820.96

Finding the Fourth Proportional to 36,138.16, 49,861.20 and 20,820.96

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Solution

The fourth proportional to 36,138.16, 49,861.20 and 20,820.96 is: 28,727.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.16 : 49,861.20 = 20,820.96 : x
  2. Step 2: Convert to fraction form
    36,138.16/49,861.20 = 20,820.96/x
  3. Step 3: Cross multiply
    36,138.16x = 49,861.20 × 20,820.96
  4. Step 4: Simplify right side
    36,138.16x = 1,038,158,128.83
  5. Step 5: Solve for x
    x = 1,038,158,128.83/36,138.16
  6. Step 6: Final answer
    x = 28,727.48

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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.