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Finding the Fourth Proportional to 14,987.57, 20,682.72 and 8,273.18

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Solution

The fourth proportional to 14,987.57, 20,682.72 and 8,273.18 is: 11,416.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.57 : 20,682.72 = 8,273.18 : x
  2. Step 2: Convert to fraction form
    14,987.57/20,682.72 = 8,273.18/x
  3. Step 3: Cross multiply
    14,987.57x = 20,682.72 × 8,273.18
  4. Step 4: Simplify right side
    14,987.57x = 171,111,917.16
  5. Step 5: Solve for x
    x = 171,111,917.16/14,987.57
  6. Step 6: Final answer
    x = 11,416.93

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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.