Home / 21,418.06-29,556.45-11,857.39

Finding the Fourth Proportional to 21,418.06, 29,556.45 and 11,857.39

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Solution

The fourth proportional to 21,418.06, 29,556.45 and 11,857.39 is: 16,362.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.06 : 29,556.45 = 11,857.39 : x
  2. Step 2: Convert to fraction form
    21,418.06/29,556.45 = 11,857.39/x
  3. Step 3: Cross multiply
    21,418.06x = 29,556.45 × 11,857.39
  4. Step 4: Simplify right side
    21,418.06x = 350,462,354.67
  5. Step 5: Solve for x
    x = 350,462,354.67/21,418.06
  6. Step 6: Final answer
    x = 16,362.94

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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.