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Finding the Fourth Proportional to 12,496.80, 18,745.20 and 5,097.45

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Solution

The fourth proportional to 12,496.80, 18,745.20 and 5,097.45 is: 7,646.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,496.80 : 18,745.20 = 5,097.45 : x
  2. Step 2: Convert to fraction form
    12,496.80/18,745.20 = 5,097.45/x
  3. Step 3: Cross multiply
    12,496.80x = 18,745.20 × 5,097.45
  4. Step 4: Simplify right side
    12,496.80x = 95,552,719.74
  5. Step 5: Solve for x
    x = 95,552,719.74/12,496.80
  6. Step 6: Final answer
    x = 7,646.18

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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.