Home / 28,664.89-39,556.78-15,917.74

Finding the Fourth Proportional to 28,664.89, 39,556.78 and 15,917.74

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Solution

The fourth proportional to 28,664.89, 39,556.78 and 15,917.74 is: 21,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.89 : 39,556.78 = 15,917.74 : x
  2. Step 2: Convert to fraction form
    28,664.89/39,556.78 = 15,917.74/x
  3. Step 3: Cross multiply
    28,664.89x = 39,556.78 × 15,917.74
  4. Step 4: Simplify right side
    28,664.89x = 629,654,400.59
  5. Step 5: Solve for x
    x = 629,654,400.59/28,664.89
  6. Step 6: Final answer
    x = 21,966.05

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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.