Home / 39,732.84-54,825.39-21,828.60

Finding the Fourth Proportional to 39,732.84, 54,825.39 and 21,828.60

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Solution

The fourth proportional to 39,732.84, 54,825.39 and 21,828.60 is: 30,120.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,732.84 : 54,825.39 = 21,828.60 : x
  2. Step 2: Convert to fraction form
    39,732.84/54,825.39 = 21,828.60/x
  3. Step 3: Cross multiply
    39,732.84x = 54,825.39 × 21,828.60
  4. Step 4: Simplify right side
    39,732.84x = 1,196,761,508.15
  5. Step 5: Solve for x
    x = 1,196,761,508.15/39,732.84
  6. Step 6: Final answer
    x = 30,120.21

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1.5x scale

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.