Home / 15,965.20-23,891.10-13,907.80

Finding the Fourth Proportional to 15,965.20, 23,891.10 and 13,907.80

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Solution

The fourth proportional to 15,965.20, 23,891.10 and 13,907.80 is: 20,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,965.20 : 23,891.10 = 13,907.80 : x
  2. Step 2: Convert to fraction form
    15,965.20/23,891.10 = 13,907.80/x
  3. Step 3: Cross multiply
    15,965.20x = 23,891.10 × 13,907.80
  4. Step 4: Simplify right side
    15,965.20x = 332,272,640.58
  5. Step 5: Solve for x
    x = 332,272,640.58/15,965.20
  6. Step 6: Final answer
    x = 20,812.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.