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Finding the Fourth Proportional to 12,122.28, 16,707 and 8,973

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Solution

The fourth proportional to 12,122.28, 16,707 and 8,973 is: 12,366.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.28 : 16,707 = 8,973 : x
  2. Step 2: Convert to fraction form
    12,122.28/16,707 = 8,973/x
  3. Step 3: Cross multiply
    12,122.28x = 16,707 × 8,973
  4. Step 4: Simplify right side
    12,122.28x = 149,911,911
  5. Step 5: Solve for x
    x = 149,911,911/12,122.28
  6. Step 6: Final answer
    x = 12,366.64

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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.