Home / 18,871,815.30-28,265,732.55-15,512,583.30

Finding the Fourth Proportional to 18,871,815.30, 28,265,732.55 and 15,512,583.30

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Solution

The fourth proportional to 18,871,815.30, 28,265,732.55 and 15,512,583.30 is: 23,234,358.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871,815.30 : 28,265,732.55 = 15,512,583.30 : x
  2. Step 2: Convert to fraction form
    18,871,815.30/28,265,732.55 = 15,512,583.30/x
  3. Step 3: Cross multiply
    18,871,815.30x = 28,265,732.55 × 15,512,583.30
  4. Step 4: Simplify right side
    18,871,815.30x = 438,474,530,717,396.44
  5. Step 5: Solve for x
    x = 438,474,530,717,396.44/18,871,815.30
  6. Step 6: Final answer
    x = 23,234,358.95

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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.