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Finding the Fourth Proportional to 13,455.84, 18,558.54 and 8,741.64

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Solution

The fourth proportional to 13,455.84, 18,558.54 and 8,741.64 is: 12,056.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.84 : 18,558.54 = 8,741.64 : x
  2. Step 2: Convert to fraction form
    13,455.84/18,558.54 = 8,741.64/x
  3. Step 3: Cross multiply
    13,455.84x = 18,558.54 × 8,741.64
  4. Step 4: Simplify right side
    13,455.84x = 162,232,075.61
  5. Step 5: Solve for x
    x = 162,232,075.61/13,455.84
  6. Step 6: Final answer
    x = 12,056.63

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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.