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Finding the Fourth Proportional to 8,947.45, 13,418.74 and 7,476.09

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Solution

The fourth proportional to 8,947.45, 13,418.74 and 7,476.09 is: 11,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,947.45 : 13,418.74 = 7,476.09 : x
  2. Step 2: Convert to fraction form
    8,947.45/13,418.74 = 7,476.09/x
  3. Step 3: Cross multiply
    8,947.45x = 13,418.74 × 7,476.09
  4. Step 4: Simplify right side
    8,947.45x = 100,319,707.93
  5. Step 5: Solve for x
    x = 100,319,707.93/8,947.45
  6. Step 6: Final answer
    x = 11,212.10

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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.