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Finding the Fourth Proportional to 28,758.03, 43,139.07 and 7,698.03

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Solution

The fourth proportional to 28,758.03, 43,139.07 and 7,698.03 is: 11,547.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758.03 : 43,139.07 = 7,698.03 : x
  2. Step 2: Convert to fraction form
    28,758.03/43,139.07 = 7,698.03/x
  3. Step 3: Cross multiply
    28,758.03x = 43,139.07 × 7,698.03
  4. Step 4: Simplify right side
    28,758.03x = 332,085,855.03
  5. Step 5: Solve for x
    x = 332,085,855.03/28,758.03
  6. Step 6: Final answer
    x = 11,547.59

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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.