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Finding the Fourth Proportional to 12,576.28, 18,866.04 and 4,784.08

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Solution

The fourth proportional to 12,576.28, 18,866.04 and 4,784.08 is: 7,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.28 : 18,866.04 = 4,784.08 : x
  2. Step 2: Convert to fraction form
    12,576.28/18,866.04 = 4,784.08/x
  3. Step 3: Cross multiply
    12,576.28x = 18,866.04 × 4,784.08
  4. Step 4: Simplify right side
    12,576.28x = 90,256,644.64
  5. Step 5: Solve for x
    x = 90,256,644.64/12,576.28
  6. Step 6: Final answer
    x = 7,176.74

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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.