Home / 15,455.88-21,329.15-8,382.33

Finding the Fourth Proportional to 15,455.88, 21,329.15 and 8,382.33

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Solution

The fourth proportional to 15,455.88, 21,329.15 and 8,382.33 is: 11,567.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.88 : 21,329.15 = 8,382.33 : x
  2. Step 2: Convert to fraction form
    15,455.88/21,329.15 = 8,382.33/x
  3. Step 3: Cross multiply
    15,455.88x = 21,329.15 × 8,382.33
  4. Step 4: Simplify right side
    15,455.88x = 178,787,932.01
  5. Step 5: Solve for x
    x = 178,787,932.01/15,455.88
  6. Step 6: Final answer
    x = 11,567.63

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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.