Home / 13,619.64-20,330.07-11,684.28

Finding the Fourth Proportional to 13,619.64, 20,330.07 and 11,684.28

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Solution

The fourth proportional to 13,619.64, 20,330.07 and 11,684.28 is: 17,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.64 : 20,330.07 = 11,684.28 : x
  2. Step 2: Convert to fraction form
    13,619.64/20,330.07 = 11,684.28/x
  3. Step 3: Cross multiply
    13,619.64x = 20,330.07 × 11,684.28
  4. Step 4: Simplify right side
    13,619.64x = 237,542,230.30
  5. Step 5: Solve for x
    x = 237,542,230.30/13,619.64
  6. Step 6: Final answer
    x = 17,441.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.