Home / 20,659.29-30,989.28-10,817.79

Finding the Fourth Proportional to 20,659.29, 30,989.28 and 10,817.79

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Solution

The fourth proportional to 20,659.29, 30,989.28 and 10,817.79 is: 16,226.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.29 : 30,989.28 = 10,817.79 : x
  2. Step 2: Convert to fraction form
    20,659.29/30,989.28 = 10,817.79/x
  3. Step 3: Cross multiply
    20,659.29x = 30,989.28 × 10,817.79
  4. Step 4: Simplify right side
    20,659.29x = 335,235,523.29
  5. Step 5: Solve for x
    x = 335,235,523.29/20,659.29
  6. Step 6: Final answer
    x = 16,226.87

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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.