Home / 18,919.92-28,384.32-5,772.29

Finding the Fourth Proportional to 18,919.92, 28,384.32 and 5,772.29

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Solution

The fourth proportional to 18,919.92, 28,384.32 and 5,772.29 is: 8,659.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.92 : 28,384.32 = 5,772.29 : x
  2. Step 2: Convert to fraction form
    18,919.92/28,384.32 = 5,772.29/x
  3. Step 3: Cross multiply
    18,919.92x = 28,384.32 × 5,772.29
  4. Step 4: Simplify right side
    18,919.92x = 163,842,540.92
  5. Step 5: Solve for x
    x = 163,842,540.92/18,919.92
  6. Step 6: Final answer
    x = 8,659.79

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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.