Home / 20,893.36-28,830.96-11,940.84

Finding the Fourth Proportional to 20,893.36, 28,830.96 and 11,940.84

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Solution

The fourth proportional to 20,893.36, 28,830.96 and 11,940.84 is: 16,477.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.36 : 28,830.96 = 11,940.84 : x
  2. Step 2: Convert to fraction form
    20,893.36/28,830.96 = 11,940.84/x
  3. Step 3: Cross multiply
    20,893.36x = 28,830.96 × 11,940.84
  4. Step 4: Simplify right side
    20,893.36x = 344,265,880.41
  5. Step 5: Solve for x
    x = 344,265,880.41/20,893.36
  6. Step 6: Final answer
    x = 16,477.29

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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.