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Finding the Fourth Proportional to 17,984.55, 26,978.69 and 6,900.51

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Solution

The fourth proportional to 17,984.55, 26,978.69 and 6,900.51 is: 10,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,984.55 : 26,978.69 = 6,900.51 : x
  2. Step 2: Convert to fraction form
    17,984.55/26,978.69 = 6,900.51/x
  3. Step 3: Cross multiply
    17,984.55x = 26,978.69 × 6,900.51
  4. Step 4: Simplify right side
    17,984.55x = 186,166,720.13
  5. Step 5: Solve for x
    x = 186,166,720.13/17,984.55
  6. Step 6: Final answer
    x = 10,351.48

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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.