Home / 13,383.78-18,469.67-8,345.04

Finding the Fourth Proportional to 13,383.78, 18,469.67 and 8,345.04

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Solution

The fourth proportional to 13,383.78, 18,469.67 and 8,345.04 is: 11,516.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.78 : 18,469.67 = 8,345.04 : x
  2. Step 2: Convert to fraction form
    13,383.78/18,469.67 = 8,345.04/x
  3. Step 3: Cross multiply
    13,383.78x = 18,469.67 × 8,345.04
  4. Step 4: Simplify right side
    13,383.78x = 154,130,093.21
  5. Step 5: Solve for x
    x = 154,130,093.21/13,383.78
  6. Step 6: Final answer
    x = 11,516.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.