Home / 15,623.73-21,570.81-13,942.25

Finding the Fourth Proportional to 15,623.73, 21,570.81 and 13,942.25

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Solution

The fourth proportional to 15,623.73, 21,570.81 and 13,942.25 is: 19,249.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.73 : 21,570.81 = 13,942.25 : x
  2. Step 2: Convert to fraction form
    15,623.73/21,570.81 = 13,942.25/x
  3. Step 3: Cross multiply
    15,623.73x = 21,570.81 × 13,942.25
  4. Step 4: Simplify right side
    15,623.73x = 300,745,517.87
  5. Step 5: Solve for x
    x = 300,745,517.87/15,623.73
  6. Step 6: Final answer
    x = 19,249.28

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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.