Home / 28,707.07-39,635.09-25,672.78

Finding the Fourth Proportional to 28,707.07, 39,635.09 and 25,672.78

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Solution

The fourth proportional to 28,707.07, 39,635.09 and 25,672.78 is: 35,445.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,707.07 : 39,635.09 = 25,672.78 : x
  2. Step 2: Convert to fraction form
    28,707.07/39,635.09 = 25,672.78/x
  3. Step 3: Cross multiply
    28,707.07x = 39,635.09 × 25,672.78
  4. Step 4: Simplify right side
    28,707.07x = 1,017,542,945.85
  5. Step 5: Solve for x
    x = 1,017,542,945.85/28,707.07
  6. Step 6: Final answer
    x = 35,445.73

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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.