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Finding the Fourth Proportional to 15,463.41, 21,339.41 and 8,389.68

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Solution

The fourth proportional to 15,463.41, 21,339.41 and 8,389.68 is: 11,577.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,463.41 : 21,339.41 = 8,389.68 : x
  2. Step 2: Convert to fraction form
    15,463.41/21,339.41 = 8,389.68/x
  3. Step 3: Cross multiply
    15,463.41x = 21,339.41 × 8,389.68
  4. Step 4: Simplify right side
    15,463.41x = 179,030,821.29
  5. Step 5: Solve for x
    x = 179,030,821.29/15,463.41
  6. Step 6: Final answer
    x = 11,577.71

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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.