Home / 20,209.23-27,889.60-11,256.74

Finding the Fourth Proportional to 20,209.23, 27,889.60 and 11,256.74

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Solution

The fourth proportional to 20,209.23, 27,889.60 and 11,256.74 is: 15,534.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.23 : 27,889.60 = 11,256.74 : x
  2. Step 2: Convert to fraction form
    20,209.23/27,889.60 = 11,256.74/x
  3. Step 3: Cross multiply
    20,209.23x = 27,889.60 × 11,256.74
  4. Step 4: Simplify right side
    20,209.23x = 313,946,040.33
  5. Step 5: Solve for x
    x = 313,946,040.33/20,209.23
  6. Step 6: Final answer
    x = 15,534.78

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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.