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Finding the Fourth Proportional to 11,928.17, 17,901.48 and 8,256.06

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Solution

The fourth proportional to 11,928.17, 17,901.48 and 8,256.06 is: 12,390.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.17 : 17,901.48 = 8,256.06 : x
  2. Step 2: Convert to fraction form
    11,928.17/17,901.48 = 8,256.06/x
  3. Step 3: Cross multiply
    11,928.17x = 17,901.48 × 8,256.06
  4. Step 4: Simplify right side
    11,928.17x = 147,795,692.97
  5. Step 5: Solve for x
    x = 147,795,692.97/11,928.17
  6. Step 6: Final answer
    x = 12,390.48

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1.5x scale

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.