Home / 20,817.42-31,222.86-6,777.96

Finding the Fourth Proportional to 20,817.42, 31,222.86 and 6,777.96

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Solution

The fourth proportional to 20,817.42, 31,222.86 and 6,777.96 is: 10,165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.42 : 31,222.86 = 6,777.96 : x
  2. Step 2: Convert to fraction form
    20,817.42/31,222.86 = 6,777.96/x
  3. Step 3: Cross multiply
    20,817.42x = 31,222.86 × 6,777.96
  4. Step 4: Simplify right side
    20,817.42x = 211,627,296.17
  5. Step 5: Solve for x
    x = 211,627,296.17/20,817.42
  6. Step 6: Final answer
    x = 10,165.88

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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.