Home / 15,128.49-22,675.92-11,418.69

Finding the Fourth Proportional to 15,128.49, 22,675.92 and 11,418.69

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Solution

The fourth proportional to 15,128.49, 22,675.92 and 11,418.69 is: 17,115.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.49 : 22,675.92 = 11,418.69 : x
  2. Step 2: Convert to fraction form
    15,128.49/22,675.92 = 11,418.69/x
  3. Step 3: Cross multiply
    15,128.49x = 22,675.92 × 11,418.69
  4. Step 4: Simplify right side
    15,128.49x = 258,929,300.94
  5. Step 5: Solve for x
    x = 258,929,300.94/15,128.49
  6. Step 6: Final answer
    x = 17,115.34

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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.