Home / 20,491.74-30,727.29-11,945.92

Finding the Fourth Proportional to 20,491.74, 30,727.29 and 11,945.92

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Solution

The fourth proportional to 20,491.74, 30,727.29 and 11,945.92 is: 17,912.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.74 : 30,727.29 = 11,945.92 : x
  2. Step 2: Convert to fraction form
    20,491.74/30,727.29 = 11,945.92/x
  3. Step 3: Cross multiply
    20,491.74x = 30,727.29 × 11,945.92
  4. Step 4: Simplify right side
    20,491.74x = 367,065,748.16
  5. Step 5: Solve for x
    x = 367,065,748.16/20,491.74
  6. Step 6: Final answer
    x = 17,912.86

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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.