Home / 19,864.02-27,418.49-12,790.43

Finding the Fourth Proportional to 19,864.02, 27,418.49 and 12,790.43

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Solution

The fourth proportional to 19,864.02, 27,418.49 and 12,790.43 is: 17,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.02 : 27,418.49 = 12,790.43 : x
  2. Step 2: Convert to fraction form
    19,864.02/27,418.49 = 12,790.43/x
  3. Step 3: Cross multiply
    19,864.02x = 27,418.49 × 12,790.43
  4. Step 4: Simplify right side
    19,864.02x = 350,694,277.05
  5. Step 5: Solve for x
    x = 350,694,277.05/19,864.02
  6. Step 6: Final answer
    x = 17,654.75

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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.