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Finding the Fourth Proportional to 9,916.30, 13,681.74 and 7,084.54

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Solution

The fourth proportional to 9,916.30, 13,681.74 and 7,084.54 is: 9,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.30 : 13,681.74 = 7,084.54 : x
  2. Step 2: Convert to fraction form
    9,916.30/13,681.74 = 7,084.54/x
  3. Step 3: Cross multiply
    9,916.30x = 13,681.74 × 7,084.54
  4. Step 4: Simplify right side
    9,916.30x = 96,928,834.30
  5. Step 5: Solve for x
    x = 96,928,834.30/9,916.30
  6. Step 6: Final answer
    x = 9,774.70

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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.