Home / 19,621.88-27,080.64-11,238.38

Finding the Fourth Proportional to 19,621.88, 27,080.64 and 11,238.38

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Solution

The fourth proportional to 19,621.88, 27,080.64 and 11,238.38 is: 15,510.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,621.88 : 27,080.64 = 11,238.38 : x
  2. Step 2: Convert to fraction form
    19,621.88/27,080.64 = 11,238.38/x
  3. Step 3: Cross multiply
    19,621.88x = 27,080.64 × 11,238.38
  4. Step 4: Simplify right side
    19,621.88x = 304,342,387.56
  5. Step 5: Solve for x
    x = 304,342,387.56/19,621.88
  6. Step 6: Final answer
    x = 15,510.36

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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.