Home / 12,989.26-19,485.94-4,222.13

Finding the Fourth Proportional to 12,989.26, 19,485.94 and 4,222.13

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Solution

The fourth proportional to 12,989.26, 19,485.94 and 4,222.13 is: 6,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.26 : 19,485.94 = 4,222.13 : x
  2. Step 2: Convert to fraction form
    12,989.26/19,485.94 = 4,222.13/x
  3. Step 3: Cross multiply
    12,989.26x = 19,485.94 × 4,222.13
  4. Step 4: Simplify right side
    12,989.26x = 82,272,083.66
  5. Step 5: Solve for x
    x = 82,272,083.66/12,989.26
  6. Step 6: Final answer
    x = 6,333.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.