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Finding the Fourth Proportional to 13,435.56, 18,541.56 and 7,467.81

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Solution

The fourth proportional to 13,435.56, 18,541.56 and 7,467.81 is: 10,305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.56 : 18,541.56 = 7,467.81 : x
  2. Step 2: Convert to fraction form
    13,435.56/18,541.56 = 7,467.81/x
  3. Step 3: Cross multiply
    13,435.56x = 18,541.56 × 7,467.81
  4. Step 4: Simplify right side
    13,435.56x = 138,464,847.18
  5. Step 5: Solve for x
    x = 138,464,847.18/13,435.56
  6. Step 6: Final answer
    x = 10,305.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.