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Finding the Fourth Proportional to 13,039.08, 17,976.06 and 8,256.60

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Solution

The fourth proportional to 13,039.08, 17,976.06 and 8,256.60 is: 11,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,039.08 : 17,976.06 = 8,256.60 : x
  2. Step 2: Convert to fraction form
    13,039.08/17,976.06 = 8,256.60/x
  3. Step 3: Cross multiply
    13,039.08x = 17,976.06 × 8,256.60
  4. Step 4: Simplify right side
    13,039.08x = 148,421,137.00
  5. Step 5: Solve for x
    x = 148,421,137.00/13,039.08
  6. Step 6: Final answer
    x = 11,382.79

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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.