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Finding the Fourth Proportional to 14,318.78, 21,475.13 and 4,457.84

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Solution

The fourth proportional to 14,318.78, 21,475.13 and 4,457.84 is: 6,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,318.78 : 21,475.13 = 4,457.84 : x
  2. Step 2: Convert to fraction form
    14,318.78/21,475.13 = 4,457.84/x
  3. Step 3: Cross multiply
    14,318.78x = 21,475.13 × 4,457.84
  4. Step 4: Simplify right side
    14,318.78x = 95,732,563.85
  5. Step 5: Solve for x
    x = 95,732,563.85/14,318.78
  6. Step 6: Final answer
    x = 6,685.81

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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.