Home / 21,556.05-29,751.49-12,124.61

Finding the Fourth Proportional to 21,556.05, 29,751.49 and 12,124.61

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Solution

The fourth proportional to 21,556.05, 29,751.49 and 12,124.61 is: 16,734.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.05 : 29,751.49 = 12,124.61 : x
  2. Step 2: Convert to fraction form
    21,556.05/29,751.49 = 12,124.61/x
  3. Step 3: Cross multiply
    21,556.05x = 29,751.49 × 12,124.61
  4. Step 4: Simplify right side
    21,556.05x = 360,725,125.26
  5. Step 5: Solve for x
    x = 360,725,125.26/21,556.05
  6. Step 6: Final answer
    x = 16,734.29

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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.