Home / 19,960.16-29,940.26-8,115.12

Finding the Fourth Proportional to 19,960.16, 29,940.26 and 8,115.12

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Solution

The fourth proportional to 19,960.16, 29,940.26 and 8,115.12 is: 12,172.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960.16 : 29,940.26 = 8,115.12 : x
  2. Step 2: Convert to fraction form
    19,960.16/29,940.26 = 8,115.12/x
  3. Step 3: Cross multiply
    19,960.16x = 29,940.26 × 8,115.12
  4. Step 4: Simplify right side
    19,960.16x = 242,968,802.73
  5. Step 5: Solve for x
    x = 242,968,802.73/19,960.16
  6. Step 6: Final answer
    x = 12,172.69

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1.5x scale

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.