Home / 28,558.26-39,408.21-15,981.30

Finding the Fourth Proportional to 28,558.26, 39,408.21 and 15,981.30

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Solution

The fourth proportional to 28,558.26, 39,408.21 and 15,981.30 is: 22,052.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.26 : 39,408.21 = 15,981.30 : x
  2. Step 2: Convert to fraction form
    28,558.26/39,408.21 = 15,981.30/x
  3. Step 3: Cross multiply
    28,558.26x = 39,408.21 × 15,981.30
  4. Step 4: Simplify right side
    28,558.26x = 629,794,426.47
  5. Step 5: Solve for x
    x = 629,794,426.47/28,558.26
  6. Step 6: Final answer
    x = 22,052.97

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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.