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Finding the Fourth Proportional to 16,886.70, 25,335.18 and 11,965.86

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Solution

The fourth proportional to 16,886.70, 25,335.18 and 11,965.86 is: 17,952.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,886.70 : 25,335.18 = 11,965.86 : x
  2. Step 2: Convert to fraction form
    16,886.70/25,335.18 = 11,965.86/x
  3. Step 3: Cross multiply
    16,886.70x = 25,335.18 × 11,965.86
  4. Step 4: Simplify right side
    16,886.70x = 303,157,216.95
  5. Step 5: Solve for x
    x = 303,157,216.95/16,886.70
  6. Step 6: Final answer
    x = 17,952.43

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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.