Home / 15,707.82-21,676.54-8,634.09

Finding the Fourth Proportional to 15,707.82, 21,676.54 and 8,634.09

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Solution

The fourth proportional to 15,707.82, 21,676.54 and 8,634.09 is: 11,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.82 : 21,676.54 = 8,634.09 : x
  2. Step 2: Convert to fraction form
    15,707.82/21,676.54 = 8,634.09/x
  3. Step 3: Cross multiply
    15,707.82x = 21,676.54 × 8,634.09
  4. Step 4: Simplify right side
    15,707.82x = 187,157,197.25
  5. Step 5: Solve for x
    x = 187,157,197.25/15,707.82
  6. Step 6: Final answer
    x = 11,914.91

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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.