Home / 39,084.56-53,936.55-21,180

Finding the Fourth Proportional to 39,084.56, 53,936.55 and 21,180

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Solution

The fourth proportional to 39,084.56, 53,936.55 and 21,180 is: 29,228.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,084.56 : 53,936.55 = 21,180 : x
  2. Step 2: Convert to fraction form
    39,084.56/53,936.55 = 21,180/x
  3. Step 3: Cross multiply
    39,084.56x = 53,936.55 × 21,180
  4. Step 4: Simplify right side
    39,084.56x = 1,142,376,129
  5. Step 5: Solve for x
    x = 1,142,376,129/39,084.56
  6. Step 6: Final answer
    x = 29,228.33

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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.