Home / 21,766.88-30,038.32-11,830.88

Finding the Fourth Proportional to 21,766.88, 30,038.32 and 11,830.88

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Solution

The fourth proportional to 21,766.88, 30,038.32 and 11,830.88 is: 16,326.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.88 : 30,038.32 = 11,830.88 : x
  2. Step 2: Convert to fraction form
    21,766.88/30,038.32 = 11,830.88/x
  3. Step 3: Cross multiply
    21,766.88x = 30,038.32 × 11,830.88
  4. Step 4: Simplify right side
    21,766.88x = 355,379,759.32
  5. Step 5: Solve for x
    x = 355,379,759.32/21,766.88
  6. Step 6: Final answer
    x = 16,326.63

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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.