Home / 13,965.12-20,918.52-13,006.08

Finding the Fourth Proportional to 13,965.12, 20,918.52 and 13,006.08

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Solution

The fourth proportional to 13,965.12, 20,918.52 and 13,006.08 is: 19,481.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.12 : 20,918.52 = 13,006.08 : x
  2. Step 2: Convert to fraction form
    13,965.12/20,918.52 = 13,006.08/x
  3. Step 3: Cross multiply
    13,965.12x = 20,918.52 × 13,006.08
  4. Step 4: Simplify right side
    13,965.12x = 272,067,944.60
  5. Step 5: Solve for x
    x = 272,067,944.60/13,965.12
  6. Step 6: Final answer
    x = 19,481.96

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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.