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Finding the Fourth Proportional to 17,798.75, 26,697.21 and 5,318.88

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Solution

The fourth proportional to 17,798.75, 26,697.21 and 5,318.88 is: 7,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,798.75 : 26,697.21 = 5,318.88 : x
  2. Step 2: Convert to fraction form
    17,798.75/26,697.21 = 5,318.88/x
  3. Step 3: Cross multiply
    17,798.75x = 26,697.21 × 5,318.88
  4. Step 4: Simplify right side
    17,798.75x = 141,999,166.18
  5. Step 5: Solve for x
    x = 141,999,166.18/17,798.75
  6. Step 6: Final answer
    x = 7,978.04

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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.