Home / 21,370.03-29,498.48-12,872.52

Finding the Fourth Proportional to 21,370.03, 29,498.48 and 12,872.52

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Solution

The fourth proportional to 21,370.03, 29,498.48 and 12,872.52 is: 17,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.03 : 29,498.48 = 12,872.52 : x
  2. Step 2: Convert to fraction form
    21,370.03/29,498.48 = 12,872.52/x
  3. Step 3: Cross multiply
    21,370.03x = 29,498.48 × 12,872.52
  4. Step 4: Simplify right side
    21,370.03x = 379,719,757.68
  5. Step 5: Solve for x
    x = 379,719,757.68/21,370.03
  6. Step 6: Final answer
    x = 17,768.80

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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.