Home / 28,173.72-38,880.33-15,427.44

Finding the Fourth Proportional to 28,173.72, 38,880.33 and 15,427.44

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Solution

The fourth proportional to 28,173.72, 38,880.33 and 15,427.44 is: 21,290.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.72 : 38,880.33 = 15,427.44 : x
  2. Step 2: Convert to fraction form
    28,173.72/38,880.33 = 15,427.44/x
  3. Step 3: Cross multiply
    28,173.72x = 38,880.33 × 15,427.44
  4. Step 4: Simplify right side
    28,173.72x = 599,823,958.26
  5. Step 5: Solve for x
    x = 599,823,958.26/28,173.72
  6. Step 6: Final answer
    x = 21,290.19

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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.