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Finding the Fourth Proportional to 14,187.66, 21,282.93 and 5,429.94

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Solution

The fourth proportional to 14,187.66, 21,282.93 and 5,429.94 is: 8,145.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.66 : 21,282.93 = 5,429.94 : x
  2. Step 2: Convert to fraction form
    14,187.66/21,282.93 = 5,429.94/x
  3. Step 3: Cross multiply
    14,187.66x = 21,282.93 × 5,429.94
  4. Step 4: Simplify right side
    14,187.66x = 115,565,032.92
  5. Step 5: Solve for x
    x = 115,565,032.92/14,187.66
  6. Step 6: Final answer
    x = 8,145.46

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.