Home / 20,202.64-27,880.24-11,128.32

Finding the Fourth Proportional to 20,202.64, 27,880.24 and 11,128.32

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Solution

The fourth proportional to 20,202.64, 27,880.24 and 11,128.32 is: 15,357.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.64 : 27,880.24 = 11,128.32 : x
  2. Step 2: Convert to fraction form
    20,202.64/27,880.24 = 11,128.32/x
  3. Step 3: Cross multiply
    20,202.64x = 27,880.24 × 11,128.32
  4. Step 4: Simplify right side
    20,202.64x = 310,260,232.40
  5. Step 5: Solve for x
    x = 310,260,232.40/20,202.64
  6. Step 6: Final answer
    x = 15,357.41

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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.