Home / 12,876.30-19,308.78-4,112.10

Finding the Fourth Proportional to 12,876.30, 19,308.78 and 4,112.10

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Solution

The fourth proportional to 12,876.30, 19,308.78 and 4,112.10 is: 6,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.30 : 19,308.78 = 4,112.10 : x
  2. Step 2: Convert to fraction form
    12,876.30/19,308.78 = 4,112.10/x
  3. Step 3: Cross multiply
    12,876.30x = 19,308.78 × 4,112.10
  4. Step 4: Simplify right side
    12,876.30x = 79,399,634.24
  5. Step 5: Solve for x
    x = 79,399,634.24/12,876.30
  6. Step 6: Final answer
    x = 6,166.34

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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.