Home / 28,939.22-39,922.63-18,733.55

Finding the Fourth Proportional to 28,939.22, 39,922.63 and 18,733.55

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Solution

The fourth proportional to 28,939.22, 39,922.63 and 18,733.55 is: 25,843.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.22 : 39,922.63 = 18,733.55 : x
  2. Step 2: Convert to fraction form
    28,939.22/39,922.63 = 18,733.55/x
  3. Step 3: Cross multiply
    28,939.22x = 39,922.63 × 18,733.55
  4. Step 4: Simplify right side
    28,939.22x = 747,892,491.57
  5. Step 5: Solve for x
    x = 747,892,491.57/28,939.22
  6. Step 6: Final answer
    x = 25,843.56

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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.