Home / 13,280.88-19,916.68-3,918.42

Finding the Fourth Proportional to 13,280.88, 19,916.68 and 3,918.42

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Solution

The fourth proportional to 13,280.88, 19,916.68 and 3,918.42 is: 5,876.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.88 : 19,916.68 = 3,918.42 : x
  2. Step 2: Convert to fraction form
    13,280.88/19,916.68 = 3,918.42/x
  3. Step 3: Cross multiply
    13,280.88x = 19,916.68 × 3,918.42
  4. Step 4: Simplify right side
    13,280.88x = 78,041,817.66
  5. Step 5: Solve for x
    x = 78,041,817.66/13,280.88
  6. Step 6: Final answer
    x = 5,876.25

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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.