Home / 18,919.96-28,381.58-5,772.48

Finding the Fourth Proportional to 18,919.96, 28,381.58 and 5,772.48

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Solution

The fourth proportional to 18,919.96, 28,381.58 and 5,772.48 is: 8,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.96 : 28,381.58 = 5,772.48 : x
  2. Step 2: Convert to fraction form
    18,919.96/28,381.58 = 5,772.48/x
  3. Step 3: Cross multiply
    18,919.96x = 28,381.58 × 5,772.48
  4. Step 4: Simplify right side
    18,919.96x = 163,832,102.92
  5. Step 5: Solve for x
    x = 163,832,102.92/18,919.96
  6. Step 6: Final answer
    x = 8,659.22

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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.