Home / 20,820.67-31,232.89-6,777.06

Finding the Fourth Proportional to 20,820.67, 31,232.89 and 6,777.06

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Solution

The fourth proportional to 20,820.67, 31,232.89 and 6,777.06 is: 10,166.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.67 : 31,232.89 = 6,777.06 : x
  2. Step 2: Convert to fraction form
    20,820.67/31,232.89 = 6,777.06/x
  3. Step 3: Cross multiply
    20,820.67x = 31,232.89 × 6,777.06
  4. Step 4: Simplify right side
    20,820.67x = 211,667,148.69
  5. Step 5: Solve for x
    x = 211,667,148.69/20,820.67
  6. Step 6: Final answer
    x = 10,166.20

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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.