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Finding the Fourth Proportional to 12,496.72, 18,730.40 and 6,948.72

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Solution

The fourth proportional to 12,496.72, 18,730.40 and 6,948.72 is: 10,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,496.72 : 18,730.40 = 6,948.72 : x
  2. Step 2: Convert to fraction form
    12,496.72/18,730.40 = 6,948.72/x
  3. Step 3: Cross multiply
    12,496.72x = 18,730.40 × 6,948.72
  4. Step 4: Simplify right side
    12,496.72x = 130,152,305.09
  5. Step 5: Solve for x
    x = 130,152,305.09/12,496.72
  6. Step 6: Final answer
    x = 10,414.92

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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.