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Finding the Fourth Proportional to 11,959.62, 17,940.12 and 3,639.93

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Solution

The fourth proportional to 11,959.62, 17,940.12 and 3,639.93 is: 5,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.62 : 17,940.12 = 3,639.93 : x
  2. Step 2: Convert to fraction form
    11,959.62/17,940.12 = 3,639.93/x
  3. Step 3: Cross multiply
    11,959.62x = 17,940.12 × 3,639.93
  4. Step 4: Simplify right side
    11,959.62x = 65,300,780.99
  5. Step 5: Solve for x
    x = 65,300,780.99/11,959.62
  6. Step 6: Final answer
    x = 5,460.11

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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.