Home / 12,918.93-19,381.68-3,684.93

Finding the Fourth Proportional to 12,918.93, 19,381.68 and 3,684.93

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Solution

The fourth proportional to 12,918.93, 19,381.68 and 3,684.93 is: 5,528.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.93 : 19,381.68 = 3,684.93 : x
  2. Step 2: Convert to fraction form
    12,918.93/19,381.68 = 3,684.93/x
  3. Step 3: Cross multiply
    12,918.93x = 19,381.68 × 3,684.93
  4. Step 4: Simplify right side
    12,918.93x = 71,420,134.08
  5. Step 5: Solve for x
    x = 71,420,134.08/12,918.93
  6. Step 6: Final answer
    x = 5,528.33

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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.