Home / 15,749.36-21,713.94-12,906.26

Finding the Fourth Proportional to 15,749.36, 21,713.94 and 12,906.26

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Solution

The fourth proportional to 15,749.36, 21,713.94 and 12,906.26 is: 17,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.36 : 21,713.94 = 12,906.26 : x
  2. Step 2: Convert to fraction form
    15,749.36/21,713.94 = 12,906.26/x
  3. Step 3: Cross multiply
    15,749.36x = 21,713.94 × 12,906.26
  4. Step 4: Simplify right side
    15,749.36x = 280,245,755.26
  5. Step 5: Solve for x
    x = 280,245,755.26/15,749.36
  6. Step 6: Final answer
    x = 17,794.10

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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.