Home / 28,335.63-39,103.07-15,760.38

Finding the Fourth Proportional to 28,335.63, 39,103.07 and 15,760.38

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Solution

The fourth proportional to 28,335.63, 39,103.07 and 15,760.38 is: 21,749.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.63 : 39,103.07 = 15,760.38 : x
  2. Step 2: Convert to fraction form
    28,335.63/39,103.07 = 15,760.38/x
  3. Step 3: Cross multiply
    28,335.63x = 39,103.07 × 15,760.38
  4. Step 4: Simplify right side
    28,335.63x = 616,279,163.56
  5. Step 5: Solve for x
    x = 616,279,163.56/28,335.63
  6. Step 6: Final answer
    x = 21,749.27

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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.