Home / 20,302.28-30,449.24-7,818.02

Finding the Fourth Proportional to 20,302.28, 30,449.24 and 7,818.02

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Solution

The fourth proportional to 20,302.28, 30,449.24 and 7,818.02 is: 11,725.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.28 : 30,449.24 = 7,818.02 : x
  2. Step 2: Convert to fraction form
    20,302.28/30,449.24 = 7,818.02/x
  3. Step 3: Cross multiply
    20,302.28x = 30,449.24 × 7,818.02
  4. Step 4: Simplify right side
    20,302.28x = 238,052,728.21
  5. Step 5: Solve for x
    x = 238,052,728.21/20,302.28
  6. Step 6: Final answer
    x = 11,725.42

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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.