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Finding the Fourth Proportional to 18,695.70, 28,043.52 and 5,547.94

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Solution

The fourth proportional to 18,695.70, 28,043.52 and 5,547.94 is: 8,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.70 : 28,043.52 = 5,547.94 : x
  2. Step 2: Convert to fraction form
    18,695.70/28,043.52 = 5,547.94/x
  3. Step 3: Cross multiply
    18,695.70x = 28,043.52 × 5,547.94
  4. Step 4: Simplify right side
    18,695.70x = 155,583,766.35
  5. Step 5: Solve for x
    x = 155,583,766.35/18,695.70
  6. Step 6: Final answer
    x = 8,321.90

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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.