Home / 20,523.28-30,780.46-5,530.05

Finding the Fourth Proportional to 20,523.28, 30,780.46 and 5,530.05

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Solution

The fourth proportional to 20,523.28, 30,780.46 and 5,530.05 is: 8,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.28 : 30,780.46 = 5,530.05 : x
  2. Step 2: Convert to fraction form
    20,523.28/30,780.46 = 5,530.05/x
  3. Step 3: Cross multiply
    20,523.28x = 30,780.46 × 5,530.05
  4. Step 4: Simplify right side
    20,523.28x = 170,217,482.82
  5. Step 5: Solve for x
    x = 170,217,482.82/20,523.28
  6. Step 6: Final answer
    x = 8,293.87

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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.