Home / 12,384.57-18,576.79-4,385.27

Finding the Fourth Proportional to 12,384.57, 18,576.79 and 4,385.27

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Solution

The fourth proportional to 12,384.57, 18,576.79 and 4,385.27 is: 6,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.57 : 18,576.79 = 4,385.27 : x
  2. Step 2: Convert to fraction form
    12,384.57/18,576.79 = 4,385.27/x
  3. Step 3: Cross multiply
    12,384.57x = 18,576.79 × 4,385.27
  4. Step 4: Simplify right side
    12,384.57x = 81,464,239.88
  5. Step 5: Solve for x
    x = 81,464,239.88/12,384.57
  6. Step 6: Final answer
    x = 6,577.88

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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.