Home / 21,556.88-29,748.69-11,997.17

Finding the Fourth Proportional to 21,556.88, 29,748.69 and 11,997.17

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Solution

The fourth proportional to 21,556.88, 29,748.69 and 11,997.17 is: 16,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.88 : 29,748.69 = 11,997.17 : x
  2. Step 2: Convert to fraction form
    21,556.88/29,748.69 = 11,997.17/x
  3. Step 3: Cross multiply
    21,556.88x = 29,748.69 × 11,997.17
  4. Step 4: Simplify right side
    21,556.88x = 356,900,091.21
  5. Step 5: Solve for x
    x = 356,900,091.21/21,556.88
  6. Step 6: Final answer
    x = 16,556.20

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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.