Home / 19,982.70-27,579.96-11,918.34

Finding the Fourth Proportional to 19,982.70, 27,579.96 and 11,918.34

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Solution

The fourth proportional to 19,982.70, 27,579.96 and 11,918.34 is: 16,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.70 : 27,579.96 = 11,918.34 : x
  2. Step 2: Convert to fraction form
    19,982.70/27,579.96 = 11,918.34/x
  3. Step 3: Cross multiply
    19,982.70x = 27,579.96 × 11,918.34
  4. Step 4: Simplify right side
    19,982.70x = 328,707,340.47
  5. Step 5: Solve for x
    x = 328,707,340.47/19,982.70
  6. Step 6: Final answer
    x = 16,449.60

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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.