Home / 19,876.82-27,440.67-15,329.55

Finding the Fourth Proportional to 19,876.82, 27,440.67 and 15,329.55

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Solution

The fourth proportional to 19,876.82, 27,440.67 and 15,329.55 is: 21,163.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.82 : 27,440.67 = 15,329.55 : x
  2. Step 2: Convert to fraction form
    19,876.82/27,440.67 = 15,329.55/x
  3. Step 3: Cross multiply
    19,876.82x = 27,440.67 × 15,329.55
  4. Step 4: Simplify right side
    19,876.82x = 420,653,122.80
  5. Step 5: Solve for x
    x = 420,653,122.80/19,876.82
  6. Step 6: Final answer
    x = 21,163.00

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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.