Home / 11,418.48-17,128.20-5,580

Finding the Fourth Proportional to 11,418.48, 17,128.20 and 5,580

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Solution

The fourth proportional to 11,418.48, 17,128.20 and 5,580 is: 8,370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.48 : 17,128.20 = 5,580 : x
  2. Step 2: Convert to fraction form
    11,418.48/17,128.20 = 5,580/x
  3. Step 3: Cross multiply
    11,418.48x = 17,128.20 × 5,580
  4. Step 4: Simplify right side
    11,418.48x = 95,575,356
  5. Step 5: Solve for x
    x = 95,575,356/11,418.48
  6. Step 6: Final answer
    x = 8,370.23

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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.