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Finding the Fourth Proportional to 12,576.76, 18,864.05 and 4,256.59

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Solution

The fourth proportional to 12,576.76, 18,864.05 and 4,256.59 is: 6,384.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.76 : 18,864.05 = 4,256.59 : x
  2. Step 2: Convert to fraction form
    12,576.76/18,864.05 = 4,256.59/x
  3. Step 3: Cross multiply
    12,576.76x = 18,864.05 × 4,256.59
  4. Step 4: Simplify right side
    12,576.76x = 80,296,544.85
  5. Step 5: Solve for x
    x = 80,296,544.85/12,576.76
  6. Step 6: Final answer
    x = 6,384.52

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1.5x scale

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.