Home / 20,258.72-30,376.96-7,109.88

Finding the Fourth Proportional to 20,258.72, 30,376.96 and 7,109.88

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Solution

The fourth proportional to 20,258.72, 30,376.96 and 7,109.88 is: 10,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.72 : 30,376.96 = 7,109.88 : x
  2. Step 2: Convert to fraction form
    20,258.72/30,376.96 = 7,109.88/x
  3. Step 3: Cross multiply
    20,258.72x = 30,376.96 × 7,109.88
  4. Step 4: Simplify right side
    20,258.72x = 215,976,540.36
  5. Step 5: Solve for x
    x = 215,976,540.36/20,258.72
  6. Step 6: Final answer
    x = 10,660.92

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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.