Home / 20,296.78-28,003.98-11,343.30

Finding the Fourth Proportional to 20,296.78, 28,003.98 and 11,343.30

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Solution

The fourth proportional to 20,296.78, 28,003.98 and 11,343.30 is: 15,650.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.78 : 28,003.98 = 11,343.30 : x
  2. Step 2: Convert to fraction form
    20,296.78/28,003.98 = 11,343.30/x
  3. Step 3: Cross multiply
    20,296.78x = 28,003.98 × 11,343.30
  4. Step 4: Simplify right side
    20,296.78x = 317,657,546.33
  5. Step 5: Solve for x
    x = 317,657,546.33/20,296.78
  6. Step 6: Final answer
    x = 15,650.64

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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.