Home / 12,305.72-18,450.38-8,358.36

Finding the Fourth Proportional to 12,305.72, 18,450.38 and 8,358.36

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Solution

The fourth proportional to 12,305.72, 18,450.38 and 8,358.36 is: 12,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.72 : 18,450.38 = 8,358.36 : x
  2. Step 2: Convert to fraction form
    12,305.72/18,450.38 = 8,358.36/x
  3. Step 3: Cross multiply
    12,305.72x = 18,450.38 × 8,358.36
  4. Step 4: Simplify right side
    12,305.72x = 154,214,918.18
  5. Step 5: Solve for x
    x = 154,214,918.18/12,305.72
  6. Step 6: Final answer
    x = 12,531.97

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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.