Home / 13,622.31-18,791.73-9,147.33

Finding the Fourth Proportional to 13,622.31, 18,791.73 and 9,147.33

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Solution

The fourth proportional to 13,622.31, 18,791.73 and 9,147.33 is: 12,618.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.31 : 18,791.73 = 9,147.33 : x
  2. Step 2: Convert to fraction form
    13,622.31/18,791.73 = 9,147.33/x
  3. Step 3: Cross multiply
    13,622.31x = 18,791.73 × 9,147.33
  4. Step 4: Simplify right side
    13,622.31x = 171,894,155.58
  5. Step 5: Solve for x
    x = 171,894,155.58/13,622.31
  6. Step 6: Final answer
    x = 12,618.58

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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.