Home / 13,622.88-18,799.56-7,961.52

Finding the Fourth Proportional to 13,622.88, 18,799.56 and 7,961.52

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Solution

The fourth proportional to 13,622.88, 18,799.56 and 7,961.52 is: 10,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.88 : 18,799.56 = 7,961.52 : x
  2. Step 2: Convert to fraction form
    13,622.88/18,799.56 = 7,961.52/x
  3. Step 3: Cross multiply
    13,622.88x = 18,799.56 × 7,961.52
  4. Step 4: Simplify right side
    13,622.88x = 149,673,072.93
  5. Step 5: Solve for x
    x = 149,673,072.93/13,622.88
  6. Step 6: Final answer
    x = 10,986.89

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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.