Home / 20,243.68-30,369.92-9,861.28

Finding the Fourth Proportional to 20,243.68, 30,369.92 and 9,861.28

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Solution

The fourth proportional to 20,243.68, 30,369.92 and 9,861.28 is: 14,794.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.68 : 30,369.92 = 9,861.28 : x
  2. Step 2: Convert to fraction form
    20,243.68/30,369.92 = 9,861.28/x
  3. Step 3: Cross multiply
    20,243.68x = 30,369.92 × 9,861.28
  4. Step 4: Simplify right side
    20,243.68x = 299,486,284.70
  5. Step 5: Solve for x
    x = 299,486,284.70/20,243.68
  6. Step 6: Final answer
    x = 14,794.06

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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.