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Finding the Fourth Proportional to 12,676.13, 19,014.20 and 3,316.13

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Solution

The fourth proportional to 12,676.13, 19,014.20 and 3,316.13 is: 4,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.13 : 19,014.20 = 3,316.13 : x
  2. Step 2: Convert to fraction form
    12,676.13/19,014.20 = 3,316.13/x
  3. Step 3: Cross multiply
    12,676.13x = 19,014.20 × 3,316.13
  4. Step 4: Simplify right side
    12,676.13x = 63,053,559.05
  5. Step 5: Solve for x
    x = 63,053,559.05/12,676.13
  6. Step 6: Final answer
    x = 4,974.20

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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.