Home / 20,739.44-31,115.20-6,699.20

Finding the Fourth Proportional to 20,739.44, 31,115.20 and 6,699.20

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Solution

The fourth proportional to 20,739.44, 31,115.20 and 6,699.20 is: 10,050.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.44 : 31,115.20 = 6,699.20 : x
  2. Step 2: Convert to fraction form
    20,739.44/31,115.20 = 6,699.20/x
  3. Step 3: Cross multiply
    20,739.44x = 31,115.20 × 6,699.20
  4. Step 4: Simplify right side
    20,739.44x = 208,446,947.84
  5. Step 5: Solve for x
    x = 208,446,947.84/20,739.44
  6. Step 6: Final answer
    x = 10,050.75

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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.