Home / 28,063.97-38,728.19-15,488.63

Finding the Fourth Proportional to 28,063.97, 38,728.19 and 15,488.63

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Solution

The fourth proportional to 28,063.97, 38,728.19 and 15,488.63 is: 21,374.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.97 : 38,728.19 = 15,488.63 : x
  2. Step 2: Convert to fraction form
    28,063.97/38,728.19 = 15,488.63/x
  3. Step 3: Cross multiply
    28,063.97x = 38,728.19 × 15,488.63
  4. Step 4: Simplify right side
    28,063.97x = 599,846,450.56
  5. Step 5: Solve for x
    x = 599,846,450.56/28,063.97
  6. Step 6: Final answer
    x = 21,374.26

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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.