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Finding the Fourth Proportional to 13,999.80, 18,493.56 and 13,999.80

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Solution

The fourth proportional to 13,999.80, 18,493.56 and 13,999.80 is: 18,493.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.80 : 18,493.56 = 13,999.80 : x
  2. Step 2: Convert to fraction form
    13,999.80/18,493.56 = 13,999.80/x
  3. Step 3: Cross multiply
    13,999.80x = 18,493.56 × 13,999.80
  4. Step 4: Simplify right side
    13,999.80x = 258,906,141.29
  5. Step 5: Solve for x
    x = 258,906,141.29/13,999.80
  6. Step 6: Final answer
    x = 18,493.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.