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Finding the Fourth Proportional to 13,457.52, 18,567.66 and 8,078.58

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Solution

The fourth proportional to 13,457.52, 18,567.66 and 8,078.58 is: 11,146.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.52 : 18,567.66 = 8,078.58 : x
  2. Step 2: Convert to fraction form
    13,457.52/18,567.66 = 8,078.58/x
  3. Step 3: Cross multiply
    13,457.52x = 18,567.66 × 8,078.58
  4. Step 4: Simplify right side
    13,457.52x = 150,000,326.72
  5. Step 5: Solve for x
    x = 150,000,326.72/13,457.52
  6. Step 6: Final answer
    x = 11,146.21

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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.