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Finding the Fourth Proportional to 16,421.40, 24,630.48 and 5,324.94

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Solution

The fourth proportional to 16,421.40, 24,630.48 and 5,324.94 is: 7,986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,421.40 : 24,630.48 = 5,324.94 : x
  2. Step 2: Convert to fraction form
    16,421.40/24,630.48 = 5,324.94/x
  3. Step 3: Cross multiply
    16,421.40x = 24,630.48 × 5,324.94
  4. Step 4: Simplify right side
    16,421.40x = 131,155,828.17
  5. Step 5: Solve for x
    x = 131,155,828.17/16,421.40
  6. Step 6: Final answer
    x = 7,986.88

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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.