Home / 28,515.70-39,351.44-16,418.56

Finding the Fourth Proportional to 28,515.70, 39,351.44 and 16,418.56

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Solution

The fourth proportional to 28,515.70, 39,351.44 and 16,418.56 is: 22,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.70 : 39,351.44 = 16,418.56 : x
  2. Step 2: Convert to fraction form
    28,515.70/39,351.44 = 16,418.56/x
  3. Step 3: Cross multiply
    28,515.70x = 39,351.44 × 16,418.56
  4. Step 4: Simplify right side
    28,515.70x = 646,093,896.63
  5. Step 5: Solve for x
    x = 646,093,896.63/28,515.70
  6. Step 6: Final answer
    x = 22,657.48

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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.