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Finding the Fourth Proportional to 11,543.72, 15,930.29 and 6,238.53

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Solution

The fourth proportional to 11,543.72, 15,930.29 and 6,238.53 is: 8,609.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,543.72 : 15,930.29 = 6,238.53 : x
  2. Step 2: Convert to fraction form
    11,543.72/15,930.29 = 6,238.53/x
  3. Step 3: Cross multiply
    11,543.72x = 15,930.29 × 6,238.53
  4. Step 4: Simplify right side
    11,543.72x = 99,381,560.88
  5. Step 5: Solve for x
    x = 99,381,560.88/11,543.72
  6. Step 6: Final answer
    x = 8,609.14

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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.