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Finding the Fourth Proportional to 12,652.97, 18,981.27 and 3,888.63

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Solution

The fourth proportional to 12,652.97, 18,981.27 and 3,888.63 is: 5,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.97 : 18,981.27 = 3,888.63 : x
  2. Step 2: Convert to fraction form
    12,652.97/18,981.27 = 3,888.63/x
  3. Step 3: Cross multiply
    12,652.97x = 18,981.27 × 3,888.63
  4. Step 4: Simplify right side
    12,652.97x = 73,811,135.96
  5. Step 5: Solve for x
    x = 73,811,135.96/12,652.97
  6. Step 6: Final answer
    x = 5,833.51

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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.