Home / 12,340.89-18,511.32-3,106.89

Finding the Fourth Proportional to 12,340.89, 18,511.32 and 3,106.89

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Solution

The fourth proportional to 12,340.89, 18,511.32 and 3,106.89 is: 4,660.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.89 : 18,511.32 = 3,106.89 : x
  2. Step 2: Convert to fraction form
    12,340.89/18,511.32 = 3,106.89/x
  3. Step 3: Cross multiply
    12,340.89x = 18,511.32 × 3,106.89
  4. Step 4: Simplify right side
    12,340.89x = 57,512,634.99
  5. Step 5: Solve for x
    x = 57,512,634.99/12,340.89
  6. Step 6: Final answer
    x = 4,660.33

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.