Home / 20,190.22-30,288.10-6,859.64

Finding the Fourth Proportional to 20,190.22, 30,288.10 and 6,859.64

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Solution

The fourth proportional to 20,190.22, 30,288.10 and 6,859.64 is: 10,290.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.22 : 30,288.10 = 6,859.64 : x
  2. Step 2: Convert to fraction form
    20,190.22/30,288.10 = 6,859.64/x
  3. Step 3: Cross multiply
    20,190.22x = 30,288.10 × 6,859.64
  4. Step 4: Simplify right side
    20,190.22x = 207,765,462.28
  5. Step 5: Solve for x
    x = 207,765,462.28/20,190.22
  6. Step 6: Final answer
    x = 10,290.40

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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.