Home / 39,787.49-54,907.89-21,883.65

Finding the Fourth Proportional to 39,787.49, 54,907.89 and 21,883.65

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Solution

The fourth proportional to 39,787.49, 54,907.89 and 21,883.65 is: 30,200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,787.49 : 54,907.89 = 21,883.65 : x
  2. Step 2: Convert to fraction form
    39,787.49/54,907.89 = 21,883.65/x
  3. Step 3: Cross multiply
    39,787.49x = 54,907.89 × 21,883.65
  4. Step 4: Simplify right side
    39,787.49x = 1,201,585,190.98
  5. Step 5: Solve for x
    x = 1,201,585,190.98/39,787.49
  6. Step 6: Final answer
    x = 30,200.08

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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.