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Finding the Fourth Proportional to 8,707.76, 12,013.40 and 5,563.44

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Solution

The fourth proportional to 8,707.76, 12,013.40 and 5,563.44 is: 7,675.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.76 : 12,013.40 = 5,563.44 : x
  2. Step 2: Convert to fraction form
    8,707.76/12,013.40 = 5,563.44/x
  3. Step 3: Cross multiply
    8,707.76x = 12,013.40 × 5,563.44
  4. Step 4: Simplify right side
    8,707.76x = 66,835,830.10
  5. Step 5: Solve for x
    x = 66,835,830.10/8,707.76
  6. Step 6: Final answer
    x = 7,675.43

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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.