Home / 19,878.08-27,431.82-10,926.36

Finding the Fourth Proportional to 19,878.08, 27,431.82 and 10,926.36

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Solution

The fourth proportional to 19,878.08, 27,431.82 and 10,926.36 is: 15,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.08 : 27,431.82 = 10,926.36 : x
  2. Step 2: Convert to fraction form
    19,878.08/27,431.82 = 10,926.36/x
  3. Step 3: Cross multiply
    19,878.08x = 27,431.82 × 10,926.36
  4. Step 4: Simplify right side
    19,878.08x = 299,729,940.78
  5. Step 5: Solve for x
    x = 299,729,940.78/19,878.08
  6. Step 6: Final answer
    x = 15,078.42

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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.