Home / 20,302.20-30,458.10-6,451.20

Finding the Fourth Proportional to 20,302.20, 30,458.10 and 6,451.20

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Solution

The fourth proportional to 20,302.20, 30,458.10 and 6,451.20 is: 9,678.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.20 : 30,458.10 = 6,451.20 : x
  2. Step 2: Convert to fraction form
    20,302.20/30,458.10 = 6,451.20/x
  3. Step 3: Cross multiply
    20,302.20x = 30,458.10 × 6,451.20
  4. Step 4: Simplify right side
    20,302.20x = 196,491,294.72
  5. Step 5: Solve for x
    x = 196,491,294.72/20,302.20
  6. Step 6: Final answer
    x = 9,678.33

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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.