Home / 20,143.60-27,795.04-11,190.24

Finding the Fourth Proportional to 20,143.60, 27,795.04 and 11,190.24

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Solution

The fourth proportional to 20,143.60, 27,795.04 and 11,190.24 is: 15,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.60 : 27,795.04 = 11,190.24 : x
  2. Step 2: Convert to fraction form
    20,143.60/27,795.04 = 11,190.24/x
  3. Step 3: Cross multiply
    20,143.60x = 27,795.04 × 11,190.24
  4. Step 4: Simplify right side
    20,143.60x = 311,033,168.41
  5. Step 5: Solve for x
    x = 311,033,168.41/20,143.60
  6. Step 6: Final answer
    x = 15,440.79

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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.