Home / 12,576.30-18,864.39-7,379.34

Finding the Fourth Proportional to 12,576.30, 18,864.39 and 7,379.34

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Solution

The fourth proportional to 12,576.30, 18,864.39 and 7,379.34 is: 11,068.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.30 : 18,864.39 = 7,379.34 : x
  2. Step 2: Convert to fraction form
    12,576.30/18,864.39 = 7,379.34/x
  3. Step 3: Cross multiply
    12,576.30x = 18,864.39 × 7,379.34
  4. Step 4: Simplify right side
    12,576.30x = 139,206,747.70
  5. Step 5: Solve for x
    x = 139,206,747.70/12,576.30
  6. Step 6: Final answer
    x = 11,068.97

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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.