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Finding the Fourth Proportional to 14,405.04, 19,878.69 and 8,117.42

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Solution

The fourth proportional to 14,405.04, 19,878.69 and 8,117.42 is: 11,201.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,405.04 : 19,878.69 = 8,117.42 : x
  2. Step 2: Convert to fraction form
    14,405.04/19,878.69 = 8,117.42/x
  3. Step 3: Cross multiply
    14,405.04x = 19,878.69 × 8,117.42
  4. Step 4: Simplify right side
    14,405.04x = 161,363,584.00
  5. Step 5: Solve for x
    x = 161,363,584.00/14,405.04
  6. Step 6: Final answer
    x = 11,201.88

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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.