Home / 20,655.98-30,986.21-6,612.69

Finding the Fourth Proportional to 20,655.98, 30,986.21 and 6,612.69

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Solution

The fourth proportional to 20,655.98, 30,986.21 and 6,612.69 is: 9,919.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.98 : 30,986.21 = 6,612.69 : x
  2. Step 2: Convert to fraction form
    20,655.98/30,986.21 = 6,612.69/x
  3. Step 3: Cross multiply
    20,655.98x = 30,986.21 × 6,612.69
  4. Step 4: Simplify right side
    20,655.98x = 204,902,201.00
  5. Step 5: Solve for x
    x = 204,902,201.00/20,655.98
  6. Step 6: Final answer
    x = 9,919.75

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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.