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Finding the Fourth Proportional to 17,868.99, 26,805.89 and 6,779.79

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Solution

The fourth proportional to 17,868.99, 26,805.89 and 6,779.79 is: 10,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,868.99 : 26,805.89 = 6,779.79 : x
  2. Step 2: Convert to fraction form
    17,868.99/26,805.89 = 6,779.79/x
  3. Step 3: Cross multiply
    17,868.99x = 26,805.89 × 6,779.79
  4. Step 4: Simplify right side
    17,868.99x = 181,738,271.06
  5. Step 5: Solve for x
    x = 181,738,271.06/17,868.99
  6. Step 6: Final answer
    x = 10,170.60

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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.