Home / 21,220.44-29,283.90-11,788.80

Finding the Fourth Proportional to 21,220.44, 29,283.90 and 11,788.80

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Solution

The fourth proportional to 21,220.44, 29,283.90 and 11,788.80 is: 16,268.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.44 : 29,283.90 = 11,788.80 : x
  2. Step 2: Convert to fraction form
    21,220.44/29,283.90 = 11,788.80/x
  3. Step 3: Cross multiply
    21,220.44x = 29,283.90 × 11,788.80
  4. Step 4: Simplify right side
    21,220.44x = 345,222,040.32
  5. Step 5: Solve for x
    x = 345,222,040.32/21,220.44
  6. Step 6: Final answer
    x = 16,268.37

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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.