Home / 19,918.68-27,490.79-11,965.29

Finding the Fourth Proportional to 19,918.68, 27,490.79 and 11,965.29

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Solution

The fourth proportional to 19,918.68, 27,490.79 and 11,965.29 is: 16,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.68 : 27,490.79 = 11,965.29 : x
  2. Step 2: Convert to fraction form
    19,918.68/27,490.79 = 11,965.29/x
  3. Step 3: Cross multiply
    19,918.68x = 27,490.79 × 11,965.29
  4. Step 4: Simplify right side
    19,918.68x = 328,935,274.68
  5. Step 5: Solve for x
    x = 328,935,274.68/19,918.68
  6. Step 6: Final answer
    x = 16,513.91

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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.