Home / 20,120.84-27,763.80-11,168.41

Finding the Fourth Proportional to 20,120.84, 27,763.80 and 11,168.41

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Solution

The fourth proportional to 20,120.84, 27,763.80 and 11,168.41 is: 15,410.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.84 : 27,763.80 = 11,168.41 : x
  2. Step 2: Convert to fraction form
    20,120.84/27,763.80 = 11,168.41/x
  3. Step 3: Cross multiply
    20,120.84x = 27,763.80 × 11,168.41
  4. Step 4: Simplify right side
    20,120.84x = 310,077,501.56
  5. Step 5: Solve for x
    x = 310,077,501.56/20,120.84
  6. Step 6: Final answer
    x = 15,410.76

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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.