Home / 21,117.06-29,141.24-11,556.72

Finding the Fourth Proportional to 21,117.06, 29,141.24 and 11,556.72

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Solution

The fourth proportional to 21,117.06, 29,141.24 and 11,556.72 is: 15,948.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.06 : 29,141.24 = 11,556.72 : x
  2. Step 2: Convert to fraction form
    21,117.06/29,141.24 = 11,556.72/x
  3. Step 3: Cross multiply
    21,117.06x = 29,141.24 × 11,556.72
  4. Step 4: Simplify right side
    21,117.06x = 336,777,093.35
  5. Step 5: Solve for x
    x = 336,777,093.35/21,117.06
  6. Step 6: Final answer
    x = 15,948.11

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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.