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Finding the Fourth Proportional to 9,436.65, 13,021.77 and 5,457.99

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Solution

The fourth proportional to 9,436.65, 13,021.77 and 5,457.99 is: 7,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,436.65 : 13,021.77 = 5,457.99 : x
  2. Step 2: Convert to fraction form
    9,436.65/13,021.77 = 5,457.99/x
  3. Step 3: Cross multiply
    9,436.65x = 13,021.77 × 5,457.99
  4. Step 4: Simplify right side
    9,436.65x = 71,072,690.44
  5. Step 5: Solve for x
    x = 71,072,690.44/9,436.65
  6. Step 6: Final answer
    x = 7,531.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.