Home / 21,768.41-30,040.08-12,208.30

Finding the Fourth Proportional to 21,768.41, 30,040.08 and 12,208.30

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Solution

The fourth proportional to 21,768.41, 30,040.08 and 12,208.30 is: 16,847.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.41 : 30,040.08 = 12,208.30 : x
  2. Step 2: Convert to fraction form
    21,768.41/30,040.08 = 12,208.30/x
  3. Step 3: Cross multiply
    21,768.41x = 30,040.08 × 12,208.30
  4. Step 4: Simplify right side
    21,768.41x = 366,738,187.78
  5. Step 5: Solve for x
    x = 366,738,187.78/21,768.41
  6. Step 6: Final answer
    x = 16,847.26

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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.