Home / 28,364.68-39,144.56-15,790.24

Finding the Fourth Proportional to 28,364.68, 39,144.56 and 15,790.24

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Solution

The fourth proportional to 28,364.68, 39,144.56 and 15,790.24 is: 21,791.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.68 : 39,144.56 = 15,790.24 : x
  2. Step 2: Convert to fraction form
    28,364.68/39,144.56 = 15,790.24/x
  3. Step 3: Cross multiply
    28,364.68x = 39,144.56 × 15,790.24
  4. Step 4: Simplify right side
    28,364.68x = 618,101,997.09
  5. Step 5: Solve for x
    x = 618,101,997.09/28,364.68
  6. Step 6: Final answer
    x = 21,791.26

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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.