Home / 19,781.30-27,296.82-11,283.79

Finding the Fourth Proportional to 19,781.30, 27,296.82 and 11,283.79

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Solution

The fourth proportional to 19,781.30, 27,296.82 and 11,283.79 is: 15,570.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.30 : 27,296.82 = 11,283.79 : x
  2. Step 2: Convert to fraction form
    19,781.30/27,296.82 = 11,283.79/x
  3. Step 3: Cross multiply
    19,781.30x = 27,296.82 × 11,283.79
  4. Step 4: Simplify right side
    19,781.30x = 308,011,584.55
  5. Step 5: Solve for x
    x = 308,011,584.55/19,781.30
  6. Step 6: Final answer
    x = 15,570.85

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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.