Home / 28,198.98-38,914.44-15,623.70

Finding the Fourth Proportional to 28,198.98, 38,914.44 and 15,623.70

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Solution

The fourth proportional to 28,198.98, 38,914.44 and 15,623.70 is: 21,560.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.98 : 38,914.44 = 15,623.70 : x
  2. Step 2: Convert to fraction form
    28,198.98/38,914.44 = 15,623.70/x
  3. Step 3: Cross multiply
    28,198.98x = 38,914.44 × 15,623.70
  4. Step 4: Simplify right side
    28,198.98x = 607,987,536.23
  5. Step 5: Solve for x
    x = 607,987,536.23/28,198.98
  6. Step 6: Final answer
    x = 21,560.62

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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.