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Finding the Fourth Proportional to 13,448.88, 18,558.88 and 7,481.12

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Solution

The fourth proportional to 13,448.88, 18,558.88 and 7,481.12 is: 10,323.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.88 : 18,558.88 = 7,481.12 : x
  2. Step 2: Convert to fraction form
    13,448.88/18,558.88 = 7,481.12/x
  3. Step 3: Cross multiply
    13,448.88x = 18,558.88 × 7,481.12
  4. Step 4: Simplify right side
    13,448.88x = 138,841,208.35
  5. Step 5: Solve for x
    x = 138,841,208.35/13,448.88
  6. Step 6: Final answer
    x = 10,323.63

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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.