Home / 19,678.06-29,516.82-11,782.78

Finding the Fourth Proportional to 19,678.06, 29,516.82 and 11,782.78

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Solution

The fourth proportional to 19,678.06, 29,516.82 and 11,782.78 is: 17,674.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.06 : 29,516.82 = 11,782.78 : x
  2. Step 2: Convert to fraction form
    19,678.06/29,516.82 = 11,782.78/x
  3. Step 3: Cross multiply
    19,678.06x = 29,516.82 × 11,782.78
  4. Step 4: Simplify right side
    19,678.06x = 347,790,196.36
  5. Step 5: Solve for x
    x = 347,790,196.36/19,678.06
  6. Step 6: Final answer
    x = 17,674.01

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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.