Home / 20,304.72-28,028.11-15,283.43

Finding the Fourth Proportional to 20,304.72, 28,028.11 and 15,283.43

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Solution

The fourth proportional to 20,304.72, 28,028.11 and 15,283.43 is: 21,096.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.72 : 28,028.11 = 15,283.43 : x
  2. Step 2: Convert to fraction form
    20,304.72/28,028.11 = 15,283.43/x
  3. Step 3: Cross multiply
    20,304.72x = 28,028.11 × 15,283.43
  4. Step 4: Simplify right side
    20,304.72x = 428,365,657.22
  5. Step 5: Solve for x
    x = 428,365,657.22/20,304.72
  6. Step 6: Final answer
    x = 21,096.85

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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.