Home / 28,343.22-39,115.53-18,766.56

Finding the Fourth Proportional to 28,343.22, 39,115.53 and 18,766.56

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Solution

The fourth proportional to 28,343.22, 39,115.53 and 18,766.56 is: 25,899.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.22 : 39,115.53 = 18,766.56 : x
  2. Step 2: Convert to fraction form
    28,343.22/39,115.53 = 18,766.56/x
  3. Step 3: Cross multiply
    28,343.22x = 39,115.53 × 18,766.56
  4. Step 4: Simplify right side
    28,343.22x = 734,063,940.68
  5. Step 5: Solve for x
    x = 734,063,940.68/28,343.22
  6. Step 6: Final answer
    x = 25,899.10

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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.