Home / 13,868.48-20,804.99-7,631.43

Finding the Fourth Proportional to 13,868.48, 20,804.99 and 7,631.43

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Solution

The fourth proportional to 13,868.48, 20,804.99 and 7,631.43 is: 11,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.48 : 20,804.99 = 7,631.43 : x
  2. Step 2: Convert to fraction form
    13,868.48/20,804.99 = 7,631.43/x
  3. Step 3: Cross multiply
    13,868.48x = 20,804.99 × 7,631.43
  4. Step 4: Simplify right side
    13,868.48x = 158,771,824.84
  5. Step 5: Solve for x
    x = 158,771,824.84/13,868.48
  6. Step 6: Final answer
    x = 11,448.39

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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.