Home / 39,787.76-54,907.08-21,883.04

Finding the Fourth Proportional to 39,787.76, 54,907.08 and 21,883.04

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Solution

The fourth proportional to 39,787.76, 54,907.08 and 21,883.04 is: 30,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,787.76 : 54,907.08 = 21,883.04 : x
  2. Step 2: Convert to fraction form
    39,787.76/54,907.08 = 21,883.04/x
  3. Step 3: Cross multiply
    39,787.76x = 54,907.08 × 21,883.04
  4. Step 4: Simplify right side
    39,787.76x = 1,201,533,827.92
  5. Step 5: Solve for x
    x = 1,201,533,827.92/39,787.76
  6. Step 6: Final answer
    x = 30,198.58

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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.