Home / 13,647.33-18,833.22-7,678.89

Finding the Fourth Proportional to 13,647.33, 18,833.22 and 7,678.89

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Solution

The fourth proportional to 13,647.33, 18,833.22 and 7,678.89 is: 10,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.33 : 18,833.22 = 7,678.89 : x
  2. Step 2: Convert to fraction form
    13,647.33/18,833.22 = 7,678.89/x
  3. Step 3: Cross multiply
    13,647.33x = 18,833.22 × 7,678.89
  4. Step 4: Simplify right side
    13,647.33x = 144,618,224.73
  5. Step 5: Solve for x
    x = 144,618,224.73/13,647.33
  6. Step 6: Final answer
    x = 10,596.81

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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.