Home / 19,678.78-29,524.54-11,780.06

Finding the Fourth Proportional to 19,678.78, 29,524.54 and 11,780.06

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Solution

The fourth proportional to 19,678.78, 29,524.54 and 11,780.06 is: 17,673.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.78 : 29,524.54 = 11,780.06 : x
  2. Step 2: Convert to fraction form
    19,678.78/29,524.54 = 11,780.06/x
  3. Step 3: Cross multiply
    19,678.78x = 29,524.54 × 11,780.06
  4. Step 4: Simplify right side
    19,678.78x = 347,800,896.89
  5. Step 5: Solve for x
    x = 347,800,896.89/19,678.78
  6. Step 6: Final answer
    x = 17,673.91

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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.