Home / 39,709.82-54,799.18-21,804.68

Finding the Fourth Proportional to 39,709.82, 54,799.18 and 21,804.68

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Solution

The fourth proportional to 39,709.82, 54,799.18 and 21,804.68 is: 30,090.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,709.82 : 54,799.18 = 21,804.68 : x
  2. Step 2: Convert to fraction form
    39,709.82/54,799.18 = 21,804.68/x
  3. Step 3: Cross multiply
    39,709.82x = 54,799.18 × 21,804.68
  4. Step 4: Simplify right side
    39,709.82x = 1,194,878,584.16
  5. Step 5: Solve for x
    x = 1,194,878,584.16/39,709.82
  6. Step 6: Final answer
    x = 30,090.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.