Home / 12,814.05-19,219.48-3,454.80

Finding the Fourth Proportional to 12,814.05, 19,219.48 and 3,454.80

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Solution

The fourth proportional to 12,814.05, 19,219.48 and 3,454.80 is: 5,181.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,814.05 : 19,219.48 = 3,454.80 : x
  2. Step 2: Convert to fraction form
    12,814.05/19,219.48 = 3,454.80/x
  3. Step 3: Cross multiply
    12,814.05x = 19,219.48 × 3,454.80
  4. Step 4: Simplify right side
    12,814.05x = 66,399,459.50
  5. Step 5: Solve for x
    x = 66,399,459.50/12,814.05
  6. Step 6: Final answer
    x = 5,181.77

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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.