Home / 15,389.94-21,232.44-11,805.54

Finding the Fourth Proportional to 15,389.94, 21,232.44 and 11,805.54

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Solution

The fourth proportional to 15,389.94, 21,232.44 and 11,805.54 is: 16,287.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.94 : 21,232.44 = 11,805.54 : x
  2. Step 2: Convert to fraction form
    15,389.94/21,232.44 = 11,805.54/x
  3. Step 3: Cross multiply
    15,389.94x = 21,232.44 × 11,805.54
  4. Step 4: Simplify right side
    15,389.94x = 250,660,419.72
  5. Step 5: Solve for x
    x = 250,660,419.72/15,389.94
  6. Step 6: Final answer
    x = 16,287.29

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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.