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Finding the Fourth Proportional to 19,230.92, 28,836.38 and 8,695.91

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Solution

The fourth proportional to 19,230.92, 28,836.38 and 8,695.91 is: 13,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.92 : 28,836.38 = 8,695.91 : x
  2. Step 2: Convert to fraction form
    19,230.92/28,836.38 = 8,695.91/x
  3. Step 3: Cross multiply
    19,230.92x = 28,836.38 × 8,695.91
  4. Step 4: Simplify right side
    19,230.92x = 250,758,565.21
  5. Step 5: Solve for x
    x = 250,758,565.21/19,230.92
  6. Step 6: Final answer
    x = 13,039.34

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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.