Home / 19,868.68-27,418.62-11,485

Finding the Fourth Proportional to 19,868.68, 27,418.62 and 11,485

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Solution

The fourth proportional to 19,868.68, 27,418.62 and 11,485 is: 15,849.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.68 : 27,418.62 = 11,485 : x
  2. Step 2: Convert to fraction form
    19,868.68/27,418.62 = 11,485/x
  3. Step 3: Cross multiply
    19,868.68x = 27,418.62 × 11,485
  4. Step 4: Simplify right side
    19,868.68x = 314,902,850.70
  5. Step 5: Solve for x
    x = 314,902,850.70/19,868.68
  6. Step 6: Final answer
    x = 15,849.21

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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.