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Finding the Fourth Proportional to 19,636.62, 29,443.08 and 7,936.17

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Solution

The fourth proportional to 19,636.62, 29,443.08 and 7,936.17 is: 11,899.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.62 : 29,443.08 = 7,936.17 : x
  2. Step 2: Convert to fraction form
    19,636.62/29,443.08 = 7,936.17/x
  3. Step 3: Cross multiply
    19,636.62x = 29,443.08 × 7,936.17
  4. Step 4: Simplify right side
    19,636.62x = 233,665,288.20
  5. Step 5: Solve for x
    x = 233,665,288.20/19,636.62
  6. Step 6: Final answer
    x = 11,899.47

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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.