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Finding the Fourth Proportional to 14,381.56, 21,575.82 and 7,358.68

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Solution

The fourth proportional to 14,381.56, 21,575.82 and 7,358.68 is: 11,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,381.56 : 21,575.82 = 7,358.68 : x
  2. Step 2: Convert to fraction form
    14,381.56/21,575.82 = 7,358.68/x
  3. Step 3: Cross multiply
    14,381.56x = 21,575.82 × 7,358.68
  4. Step 4: Simplify right side
    14,381.56x = 158,769,555.12
  5. Step 5: Solve for x
    x = 158,769,555.12/14,381.56
  6. Step 6: Final answer
    x = 11,039.80

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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.