Home / 18,792,331.20-28,132,509.60-11,215,396.80

Finding the Fourth Proportional to 18,792,331.20, 28,132,509.60 and 11,215,396.80

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Solution

The fourth proportional to 18,792,331.20, 28,132,509.60 and 11,215,396.80 is: 16,789,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792,331.20 : 28,132,509.60 = 11,215,396.80 : x
  2. Step 2: Convert to fraction form
    18,792,331.20/28,132,509.60 = 11,215,396.80/x
  3. Step 3: Cross multiply
    18,792,331.20x = 28,132,509.60 × 11,215,396.80
  4. Step 4: Simplify right side
    18,792,331.20x = 315,517,258,143,809.31
  5. Step 5: Solve for x
    x = 315,517,258,143,809.31/18,792,331.20
  6. Step 6: Final answer
    x = 16,789,681.64

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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.