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Finding the Fourth Proportional to 19,776.62, 29,661.84 and 6,629.10

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Solution

The fourth proportional to 19,776.62, 29,661.84 and 6,629.10 is: 9,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.62 : 29,661.84 = 6,629.10 : x
  2. Step 2: Convert to fraction form
    19,776.62/29,661.84 = 6,629.10/x
  3. Step 3: Cross multiply
    19,776.62x = 29,661.84 × 6,629.10
  4. Step 4: Simplify right side
    19,776.62x = 196,631,303.54
  5. Step 5: Solve for x
    x = 196,631,303.54/19,776.62
  6. Step 6: Final answer
    x = 9,942.62

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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.