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Finding the Fourth Proportional to 12,250.54, 16,905.92 and 9,178.95

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Solution

The fourth proportional to 12,250.54, 16,905.92 and 9,178.95 is: 12,667.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,250.54 : 16,905.92 = 9,178.95 : x
  2. Step 2: Convert to fraction form
    12,250.54/16,905.92 = 9,178.95/x
  3. Step 3: Cross multiply
    12,250.54x = 16,905.92 × 9,178.95
  4. Step 4: Simplify right side
    12,250.54x = 155,178,611.89
  5. Step 5: Solve for x
    x = 155,178,611.89/12,250.54
  6. Step 6: Final answer
    x = 12,667.08

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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.