Home / 19,775.43-27,290.79-13,323.78

Finding the Fourth Proportional to 19,775.43, 27,290.79 and 13,323.78

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Solution

The fourth proportional to 19,775.43, 27,290.79 and 13,323.78 is: 18,387.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.43 : 27,290.79 = 13,323.78 : x
  2. Step 2: Convert to fraction form
    19,775.43/27,290.79 = 13,323.78/x
  3. Step 3: Cross multiply
    19,775.43x = 27,290.79 × 13,323.78
  4. Step 4: Simplify right side
    19,775.43x = 363,616,481.99
  5. Step 5: Solve for x
    x = 363,616,481.99/19,775.43
  6. Step 6: Final answer
    x = 18,387.29

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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.