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Finding the Fourth Proportional to 20,800.56, 31,200.48 and 20,062.56

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Solution

The fourth proportional to 20,800.56, 31,200.48 and 20,062.56 is: 30,093.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.56 : 31,200.48 = 20,062.56 : x
  2. Step 2: Convert to fraction form
    20,800.56/31,200.48 = 20,062.56/x
  3. Step 3: Cross multiply
    20,800.56x = 31,200.48 × 20,062.56
  4. Step 4: Simplify right side
    20,800.56x = 625,961,502.03
  5. Step 5: Solve for x
    x = 625,961,502.03/20,800.56
  6. Step 6: Final answer
    x = 30,093.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.