Home / 21,685.21-29,922.28-12,250.33

Finding the Fourth Proportional to 21,685.21, 29,922.28 and 12,250.33

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Solution

The fourth proportional to 21,685.21, 29,922.28 and 12,250.33 is: 16,903.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.21 : 29,922.28 = 12,250.33 : x
  2. Step 2: Convert to fraction form
    21,685.21/29,922.28 = 12,250.33/x
  3. Step 3: Cross multiply
    21,685.21x = 29,922.28 × 12,250.33
  4. Step 4: Simplify right side
    21,685.21x = 366,557,804.35
  5. Step 5: Solve for x
    x = 366,557,804.35/21,685.21
  6. Step 6: Final answer
    x = 16,903.59

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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.