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Finding the Fourth Proportional to 18,823.92, 28,231.82 and 5,673.58

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Solution

The fourth proportional to 18,823.92, 28,231.82 and 5,673.58 is: 8,509.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,823.92 : 28,231.82 = 5,673.58 : x
  2. Step 2: Convert to fraction form
    18,823.92/28,231.82 = 5,673.58/x
  3. Step 3: Cross multiply
    18,823.92x = 28,231.82 × 5,673.58
  4. Step 4: Simplify right side
    18,823.92x = 160,175,489.32
  5. Step 5: Solve for x
    x = 160,175,489.32/18,823.92
  6. Step 6: Final answer
    x = 8,509.15

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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.