Home / 20,161.78-30,250.94-8,911.17

Finding the Fourth Proportional to 20,161.78, 30,250.94 and 8,911.17

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Solution

The fourth proportional to 20,161.78, 30,250.94 and 8,911.17 is: 13,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.78 : 30,250.94 = 8,911.17 : x
  2. Step 2: Convert to fraction form
    20,161.78/30,250.94 = 8,911.17/x
  3. Step 3: Cross multiply
    20,161.78x = 30,250.94 × 8,911.17
  4. Step 4: Simplify right side
    20,161.78x = 269,571,264.51
  5. Step 5: Solve for x
    x = 269,571,264.51/20,161.78
  6. Step 6: Final answer
    x = 13,370.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.