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Finding the Fourth Proportional to 38,661.84, 53,353.44 and 21,894.84

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Solution

The fourth proportional to 38,661.84, 53,353.44 and 21,894.84 is: 30,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,661.84 : 53,353.44 = 21,894.84 : x
  2. Step 2: Convert to fraction form
    38,661.84/53,353.44 = 21,894.84/x
  3. Step 3: Cross multiply
    38,661.84x = 53,353.44 × 21,894.84
  4. Step 4: Simplify right side
    38,661.84x = 1,168,165,032.25
  5. Step 5: Solve for x
    x = 1,168,165,032.25/38,661.84
  6. Step 6: Final answer
    x = 30,214.94

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