Home / 20,085.20-30,127.80-6,234.20

Finding the Fourth Proportional to 20,085.20, 30,127.80 and 6,234.20

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Solution

The fourth proportional to 20,085.20, 30,127.80 and 6,234.20 is: 9,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.20 : 30,127.80 = 6,234.20 : x
  2. Step 2: Convert to fraction form
    20,085.20/30,127.80 = 6,234.20/x
  3. Step 3: Cross multiply
    20,085.20x = 30,127.80 × 6,234.20
  4. Step 4: Simplify right side
    20,085.20x = 187,822,730.76
  5. Step 5: Solve for x
    x = 187,822,730.76/20,085.20
  6. Step 6: Final answer
    x = 9,351.30

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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.