Home / 20,804.32-31,209.56-6,759.76

Finding the Fourth Proportional to 20,804.32, 31,209.56 and 6,759.76

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Solution

The fourth proportional to 20,804.32, 31,209.56 and 6,759.76 is: 10,140.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.32 : 31,209.56 = 6,759.76 : x
  2. Step 2: Convert to fraction form
    20,804.32/31,209.56 = 6,759.76/x
  3. Step 3: Cross multiply
    20,804.32x = 31,209.56 × 6,759.76
  4. Step 4: Simplify right side
    20,804.32x = 210,969,135.31
  5. Step 5: Solve for x
    x = 210,969,135.31/20,804.32
  6. Step 6: Final answer
    x = 10,140.64

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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.