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Finding the Fourth Proportional to 16,659, 22,990.86 and 9,208.44

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Solution

The fourth proportional to 16,659, 22,990.86 and 9,208.44 is: 12,708.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,659 : 22,990.86 = 9,208.44 : x
  2. Step 2: Convert to fraction form
    16,659/22,990.86 = 9,208.44/x
  3. Step 3: Cross multiply
    16,659x = 22,990.86 × 9,208.44
  4. Step 4: Simplify right side
    16,659x = 211,709,954.86
  5. Step 5: Solve for x
    x = 211,709,954.86/16,659
  6. Step 6: Final answer
    x = 12,708.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.