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Finding the Fourth Proportional to 19,506.68, 26,912.20 and 11,118.32

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Solution

The fourth proportional to 19,506.68, 26,912.20 and 11,118.32 is: 15,339.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,506.68 : 26,912.20 = 11,118.32 : x
  2. Step 2: Convert to fraction form
    19,506.68/26,912.20 = 11,118.32/x
  3. Step 3: Cross multiply
    19,506.68x = 26,912.20 × 11,118.32
  4. Step 4: Simplify right side
    19,506.68x = 299,218,451.50
  5. Step 5: Solve for x
    x = 299,218,451.50/19,506.68
  6. Step 6: Final answer
    x = 15,339.28

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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.