Home / 20,767.68-31,151.52-6,917.76

Finding the Fourth Proportional to 20,767.68, 31,151.52 and 6,917.76

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Solution

The fourth proportional to 20,767.68, 31,151.52 and 6,917.76 is: 10,376.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.68 : 31,151.52 = 6,917.76 : x
  2. Step 2: Convert to fraction form
    20,767.68/31,151.52 = 6,917.76/x
  3. Step 3: Cross multiply
    20,767.68x = 31,151.52 × 6,917.76
  4. Step 4: Simplify right side
    20,767.68x = 215,498,739.00
  5. Step 5: Solve for x
    x = 215,498,739.00/20,767.68
  6. Step 6: Final answer
    x = 10,376.64

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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.