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Finding the Fourth Proportional to 20,194.56, 30,258.24 and 7,039.68

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Solution

The fourth proportional to 20,194.56, 30,258.24 and 7,039.68 is: 10,547.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,194.56 : 30,258.24 = 7,039.68 : x
  2. Step 2: Convert to fraction form
    20,194.56/30,258.24 = 7,039.68/x
  3. Step 3: Cross multiply
    20,194.56x = 30,258.24 × 7,039.68
  4. Step 4: Simplify right side
    20,194.56x = 213,008,326.96
  5. Step 5: Solve for x
    x = 213,008,326.96/20,194.56
  6. Step 6: Final answer
    x = 10,547.81

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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.