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Finding the Fourth Proportional to 12,576.69, 18,851.81 and 4,248.81

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Solution

The fourth proportional to 12,576.69, 18,851.81 and 4,248.81 is: 6,368.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.69 : 18,851.81 = 4,248.81 : x
  2. Step 2: Convert to fraction form
    12,576.69/18,851.81 = 4,248.81/x
  3. Step 3: Cross multiply
    12,576.69x = 18,851.81 × 4,248.81
  4. Step 4: Simplify right side
    12,576.69x = 80,097,737.60
  5. Step 5: Solve for x
    x = 80,097,737.60/12,576.69
  6. Step 6: Final answer
    x = 6,368.75

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Why These Related Problems?

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