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Finding the Fourth Proportional to 12,750, 19,126.62 and 3,516

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Solution

The fourth proportional to 12,750, 19,126.62 and 3,516 is: 5,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750 : 19,126.62 = 3,516 : x
  2. Step 2: Convert to fraction form
    12,750/19,126.62 = 3,516/x
  3. Step 3: Cross multiply
    12,750x = 19,126.62 × 3,516
  4. Step 4: Simplify right side
    12,750x = 67,249,195.92
  5. Step 5: Solve for x
    x = 67,249,195.92/12,750
  6. Step 6: Final answer
    x = 5,274.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.