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Finding the Fourth Proportional to 19,356.75, 29,040 and 5,505.75

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Solution

The fourth proportional to 19,356.75, 29,040 and 5,505.75 is: 8,260.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,356.75 : 29,040 = 5,505.75 : x
  2. Step 2: Convert to fraction form
    19,356.75/29,040 = 5,505.75/x
  3. Step 3: Cross multiply
    19,356.75x = 29,040 × 5,505.75
  4. Step 4: Simplify right side
    19,356.75x = 159,886,980
  5. Step 5: Solve for x
    x = 159,886,980/19,356.75
  6. Step 6: Final answer
    x = 8,260.01

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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.