Home / 20,431,935.20-30,647,792.08-8,758,587.60

Finding the Fourth Proportional to 20,431,935.20, 30,647,792.08 and 8,758,587.60

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Solution

The fourth proportional to 20,431,935.20, 30,647,792.08 and 8,758,587.60 is: 13,137,833.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431,935.20 : 30,647,792.08 = 8,758,587.60 : x
  2. Step 2: Convert to fraction form
    20,431,935.20/30,647,792.08 = 8,758,587.60/x
  3. Step 3: Cross multiply
    20,431,935.20x = 30,647,792.08 × 8,758,587.60
  4. Step 4: Simplify right side
    20,431,935.20x = 268,431,371,679,266.19
  5. Step 5: Solve for x
    x = 268,431,371,679,266.19/20,431,935.20
  6. Step 6: Final answer
    x = 13,137,833.94

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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.