Home / 20,113.57-27,756.83-11,161.06

Finding the Fourth Proportional to 20,113.57, 27,756.83 and 11,161.06

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Solution

The fourth proportional to 20,113.57, 27,756.83 and 11,161.06 is: 15,402.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.57 : 27,756.83 = 11,161.06 : x
  2. Step 2: Convert to fraction form
    20,113.57/27,756.83 = 11,161.06/x
  3. Step 3: Cross multiply
    20,113.57x = 27,756.83 × 11,161.06
  4. Step 4: Simplify right side
    20,113.57x = 309,795,540.77
  5. Step 5: Solve for x
    x = 309,795,540.77/20,113.57
  6. Step 6: Final answer
    x = 15,402.32

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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.