Home / 13,935.84-20,918.52-13,622.64

Finding the Fourth Proportional to 13,935.84, 20,918.52 and 13,622.64

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Solution

The fourth proportional to 13,935.84, 20,918.52 and 13,622.64 is: 20,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.84 : 20,918.52 = 13,622.64 : x
  2. Step 2: Convert to fraction form
    13,935.84/20,918.52 = 13,622.64/x
  3. Step 3: Cross multiply
    13,935.84x = 20,918.52 × 13,622.64
  4. Step 4: Simplify right side
    13,935.84x = 284,965,467.29
  5. Step 5: Solve for x
    x = 284,965,467.29/13,935.84
  6. Step 6: Final answer
    x = 20,448.39

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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.