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Finding the Fourth Proportional to 11,197.65, 15,447.58 and 7,220.04

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Solution

The fourth proportional to 11,197.65, 15,447.58 and 7,220.04 is: 9,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,197.65 : 15,447.58 = 7,220.04 : x
  2. Step 2: Convert to fraction form
    11,197.65/15,447.58 = 7,220.04/x
  3. Step 3: Cross multiply
    11,197.65x = 15,447.58 × 7,220.04
  4. Step 4: Simplify right side
    11,197.65x = 111,532,068.27
  5. Step 5: Solve for x
    x = 111,532,068.27/11,197.65
  6. Step 6: Final answer
    x = 9,960.31

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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.