Home / 20,278.08-30,420.04-6,239.29

Finding the Fourth Proportional to 20,278.08, 30,420.04 and 6,239.29

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Solution

The fourth proportional to 20,278.08, 30,420.04 and 6,239.29 is: 9,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.08 : 30,420.04 = 6,239.29 : x
  2. Step 2: Convert to fraction form
    20,278.08/30,420.04 = 6,239.29/x
  3. Step 3: Cross multiply
    20,278.08x = 30,420.04 × 6,239.29
  4. Step 4: Simplify right side
    20,278.08x = 189,799,451.37
  5. Step 5: Solve for x
    x = 189,799,451.37/20,278.08
  6. Step 6: Final answer
    x = 9,359.83

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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.