Home / 20,021.72-27,630.78-11,069.24

Finding the Fourth Proportional to 20,021.72, 27,630.78 and 11,069.24

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Solution

The fourth proportional to 20,021.72, 27,630.78 and 11,069.24 is: 15,276.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.72 : 27,630.78 = 11,069.24 : x
  2. Step 2: Convert to fraction form
    20,021.72/27,630.78 = 11,069.24/x
  3. Step 3: Cross multiply
    20,021.72x = 27,630.78 × 11,069.24
  4. Step 4: Simplify right side
    20,021.72x = 305,851,735.21
  5. Step 5: Solve for x
    x = 305,851,735.21/20,021.72
  6. Step 6: Final answer
    x = 15,276.00

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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.