Home / 20,635.80-30,919.24-19,867.92

Finding the Fourth Proportional to 20,635.80, 30,919.24 and 19,867.92

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Solution

The fourth proportional to 20,635.80, 30,919.24 and 19,867.92 is: 29,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.80 : 30,919.24 = 19,867.92 : x
  2. Step 2: Convert to fraction form
    20,635.80/30,919.24 = 19,867.92/x
  3. Step 3: Cross multiply
    20,635.80x = 30,919.24 × 19,867.92
  4. Step 4: Simplify right side
    20,635.80x = 614,300,986.78
  5. Step 5: Solve for x
    x = 614,300,986.78/20,635.80
  6. Step 6: Final answer
    x = 29,768.70

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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.