Home / 12,683.12-19,022.45-3,918.11

Finding the Fourth Proportional to 12,683.12, 19,022.45 and 3,918.11

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Solution

The fourth proportional to 12,683.12, 19,022.45 and 3,918.11 is: 5,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,683.12 : 19,022.45 = 3,918.11 : x
  2. Step 2: Convert to fraction form
    12,683.12/19,022.45 = 3,918.11/x
  3. Step 3: Cross multiply
    12,683.12x = 19,022.45 × 3,918.11
  4. Step 4: Simplify right side
    12,683.12x = 74,531,936.87
  5. Step 5: Solve for x
    x = 74,531,936.87/12,683.12
  6. Step 6: Final answer
    x = 5,876.47

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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.