Home / 20,808.32-31,216.56-6,771.92

Finding the Fourth Proportional to 20,808.32, 31,216.56 and 6,771.92

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Solution

The fourth proportional to 20,808.32, 31,216.56 and 6,771.92 is: 10,159.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.32 : 31,216.56 = 6,771.92 : x
  2. Step 2: Convert to fraction form
    20,808.32/31,216.56 = 6,771.92/x
  3. Step 3: Cross multiply
    20,808.32x = 31,216.56 × 6,771.92
  4. Step 4: Simplify right side
    20,808.32x = 211,396,047.00
  5. Step 5: Solve for x
    x = 211,396,047.00/20,808.32
  6. Step 6: Final answer
    x = 10,159.21

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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.