Home / 20,824.70-28,738.80-11,393.26

Finding the Fourth Proportional to 20,824.70, 28,738.80 and 11,393.26

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Solution

The fourth proportional to 20,824.70, 28,738.80 and 11,393.26 is: 15,723.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.70 : 28,738.80 = 11,393.26 : x
  2. Step 2: Convert to fraction form
    20,824.70/28,738.80 = 11,393.26/x
  3. Step 3: Cross multiply
    20,824.70x = 28,738.80 × 11,393.26
  4. Step 4: Simplify right side
    20,824.70x = 327,428,548.64
  5. Step 5: Solve for x
    x = 327,428,548.64/20,824.70
  6. Step 6: Final answer
    x = 15,723.09

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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.