Home / 13,912.37-19,187.90-12,230.21

Finding the Fourth Proportional to 13,912.37, 19,187.90 and 12,230.21

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Solution

The fourth proportional to 13,912.37, 19,187.90 and 12,230.21 is: 16,867.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.37 : 19,187.90 = 12,230.21 : x
  2. Step 2: Convert to fraction form
    13,912.37/19,187.90 = 12,230.21/x
  3. Step 3: Cross multiply
    13,912.37x = 19,187.90 × 12,230.21
  4. Step 4: Simplify right side
    13,912.37x = 234,671,889.37
  5. Step 5: Solve for x
    x = 234,671,889.37/13,912.37
  6. Step 6: Final answer
    x = 16,867.86

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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.