Home / 13,910.37-19,185.14-12,228.20

Finding the Fourth Proportional to 13,910.37, 19,185.14 and 12,228.20

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Solution

The fourth proportional to 13,910.37, 19,185.14 and 12,228.20 is: 16,865.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.37 : 19,185.14 = 12,228.20 : x
  2. Step 2: Convert to fraction form
    13,910.37/19,185.14 = 12,228.20/x
  3. Step 3: Cross multiply
    13,910.37x = 19,185.14 × 12,228.20
  4. Step 4: Simplify right side
    13,910.37x = 234,599,728.95
  5. Step 5: Solve for x
    x = 234,599,728.95/13,910.37
  6. Step 6: Final answer
    x = 16,865.10

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Double scale
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Similar ratio
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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.