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Finding the Fourth Proportional to 12,230.55, 16,881.18 and 6,928.50

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Solution

The fourth proportional to 12,230.55, 16,881.18 and 6,928.50 is: 9,563.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,230.55 : 16,881.18 = 6,928.50 : x
  2. Step 2: Convert to fraction form
    12,230.55/16,881.18 = 6,928.50/x
  3. Step 3: Cross multiply
    12,230.55x = 16,881.18 × 6,928.50
  4. Step 4: Simplify right side
    12,230.55x = 116,961,255.63
  5. Step 5: Solve for x
    x = 116,961,255.63/12,230.55
  6. Step 6: Final answer
    x = 9,563.04

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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.