Home / 20,663.28-30,990.24-5,871.84

Finding the Fourth Proportional to 20,663.28, 30,990.24 and 5,871.84

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Solution

The fourth proportional to 20,663.28, 30,990.24 and 5,871.84 is: 8,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.28 : 30,990.24 = 5,871.84 : x
  2. Step 2: Convert to fraction form
    20,663.28/30,990.24 = 5,871.84/x
  3. Step 3: Cross multiply
    20,663.28x = 30,990.24 × 5,871.84
  4. Step 4: Simplify right side
    20,663.28x = 181,969,730.84
  5. Step 5: Solve for x
    x = 181,969,730.84/20,663.28
  6. Step 6: Final answer
    x = 8,806.43

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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.