Home / 12,161.87-18,224.61-11,009.78

Finding the Fourth Proportional to 12,161.87, 18,224.61 and 11,009.78

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Solution

The fourth proportional to 12,161.87, 18,224.61 and 11,009.78 is: 16,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.87 : 18,224.61 = 11,009.78 : x
  2. Step 2: Convert to fraction form
    12,161.87/18,224.61 = 11,009.78/x
  3. Step 3: Cross multiply
    12,161.87x = 18,224.61 × 11,009.78
  4. Step 4: Simplify right side
    12,161.87x = 200,648,946.69
  5. Step 5: Solve for x
    x = 200,648,946.69/12,161.87
  6. Step 6: Final answer
    x = 16,498.20

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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.