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Finding the Fourth Proportional to 20,015.59, 30,023.99 and 6,867.77

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Solution

The fourth proportional to 20,015.59, 30,023.99 and 6,867.77 is: 10,301.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.59 : 30,023.99 = 6,867.77 : x
  2. Step 2: Convert to fraction form
    20,015.59/30,023.99 = 6,867.77/x
  3. Step 3: Cross multiply
    20,015.59x = 30,023.99 × 6,867.77
  4. Step 4: Simplify right side
    20,015.59x = 206,197,857.80
  5. Step 5: Solve for x
    x = 206,197,857.80/20,015.59
  6. Step 6: Final answer
    x = 10,301.86

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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.