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Finding the Fourth Proportional to 11,856.45, 16,362.54 and 6,551.76

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Solution

The fourth proportional to 11,856.45, 16,362.54 and 6,551.76 is: 9,041.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.45 : 16,362.54 = 6,551.76 : x
  2. Step 2: Convert to fraction form
    11,856.45/16,362.54 = 6,551.76/x
  3. Step 3: Cross multiply
    11,856.45x = 16,362.54 × 6,551.76
  4. Step 4: Simplify right side
    11,856.45x = 107,203,435.07
  5. Step 5: Solve for x
    x = 107,203,435.07/11,856.45
  6. Step 6: Final answer
    x = 9,041.78

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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.