Home / 19,878.75-27,433.31-10,926.41

Finding the Fourth Proportional to 19,878.75, 27,433.31 and 10,926.41

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Solution

The fourth proportional to 19,878.75, 27,433.31 and 10,926.41 is: 15,078.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.75 : 27,433.31 = 10,926.41 : x
  2. Step 2: Convert to fraction form
    19,878.75/27,433.31 = 10,926.41/x
  3. Step 3: Cross multiply
    19,878.75x = 27,433.31 × 10,926.41
  4. Step 4: Simplify right side
    19,878.75x = 299,747,400.92
  5. Step 5: Solve for x
    x = 299,747,400.92/19,878.75
  6. Step 6: Final answer
    x = 15,078.79

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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.