Home / 19,147.78-28,721.67-11,352.34

Finding the Fourth Proportional to 19,147.78, 28,721.67 and 11,352.34

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Solution

The fourth proportional to 19,147.78, 28,721.67 and 11,352.34 is: 17,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.78 : 28,721.67 = 11,352.34 : x
  2. Step 2: Convert to fraction form
    19,147.78/28,721.67 = 11,352.34/x
  3. Step 3: Cross multiply
    19,147.78x = 28,721.67 × 11,352.34
  4. Step 4: Simplify right side
    19,147.78x = 326,058,163.21
  5. Step 5: Solve for x
    x = 326,058,163.21/19,147.78
  6. Step 6: Final answer
    x = 17,028.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.