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Finding the Fourth Proportional to 9,348.81, 12,918.47 and 8,893.23

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Solution

The fourth proportional to 9,348.81, 12,918.47 and 8,893.23 is: 12,288.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,348.81 : 12,918.47 = 8,893.23 : x
  2. Step 2: Convert to fraction form
    9,348.81/12,918.47 = 8,893.23/x
  3. Step 3: Cross multiply
    9,348.81x = 12,918.47 × 8,893.23
  4. Step 4: Simplify right side
    9,348.81x = 114,886,880.49
  5. Step 5: Solve for x
    x = 114,886,880.49/9,348.81
  6. Step 6: Final answer
    x = 12,288.93

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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.