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Finding the Fourth Proportional to 11,339.72, 15,648.18 and 6,371.72

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Solution

The fourth proportional to 11,339.72, 15,648.18 and 6,371.72 is: 8,792.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,339.72 : 15,648.18 = 6,371.72 : x
  2. Step 2: Convert to fraction form
    11,339.72/15,648.18 = 6,371.72/x
  3. Step 3: Cross multiply
    11,339.72x = 15,648.18 × 6,371.72
  4. Step 4: Simplify right side
    11,339.72x = 99,705,821.47
  5. Step 5: Solve for x
    x = 99,705,821.47/11,339.72
  6. Step 6: Final answer
    x = 8,792.62

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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.