Home / 19,517.85-26,928-11,018.97

Finding the Fourth Proportional to 19,517.85, 26,928 and 11,018.97

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Solution

The fourth proportional to 19,517.85, 26,928 and 11,018.97 is: 15,202.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,517.85 : 26,928 = 11,018.97 : x
  2. Step 2: Convert to fraction form
    19,517.85/26,928 = 11,018.97/x
  3. Step 3: Cross multiply
    19,517.85x = 26,928 × 11,018.97
  4. Step 4: Simplify right side
    19,517.85x = 296,718,824.16
  5. Step 5: Solve for x
    x = 296,718,824.16/19,517.85
  6. Step 6: Final answer
    x = 15,202.43

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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.