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Finding the Fourth Proportional to 12,636.52, 18,946.67 and 5,246.08

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Solution

The fourth proportional to 12,636.52, 18,946.67 and 5,246.08 is: 7,865.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.52 : 18,946.67 = 5,246.08 : x
  2. Step 2: Convert to fraction form
    12,636.52/18,946.67 = 5,246.08/x
  3. Step 3: Cross multiply
    12,636.52x = 18,946.67 × 5,246.08
  4. Step 4: Simplify right side
    12,636.52x = 99,395,746.55
  5. Step 5: Solve for x
    x = 99,395,746.55/12,636.52
  6. Step 6: Final answer
    x = 7,865.75

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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.