Home / 20,126.04-30,193.92-6,978.12

Finding the Fourth Proportional to 20,126.04, 30,193.92 and 6,978.12

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Solution

The fourth proportional to 20,126.04, 30,193.92 and 6,978.12 is: 10,468.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.04 : 30,193.92 = 6,978.12 : x
  2. Step 2: Convert to fraction form
    20,126.04/30,193.92 = 6,978.12/x
  3. Step 3: Cross multiply
    20,126.04x = 30,193.92 × 6,978.12
  4. Step 4: Simplify right side
    20,126.04x = 210,696,797.03
  5. Step 5: Solve for x
    x = 210,696,797.03/20,126.04
  6. Step 6: Final answer
    x = 10,468.87

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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.