Home / 13,446.82-18,556.23-7,478.38

Finding the Fourth Proportional to 13,446.82, 18,556.23 and 7,478.38

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Solution

The fourth proportional to 13,446.82, 18,556.23 and 7,478.38 is: 10,319.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.82 : 18,556.23 = 7,478.38 : x
  2. Step 2: Convert to fraction form
    13,446.82/18,556.23 = 7,478.38/x
  3. Step 3: Cross multiply
    13,446.82x = 18,556.23 × 7,478.38
  4. Step 4: Simplify right side
    13,446.82x = 138,770,539.31
  5. Step 5: Solve for x
    x = 138,770,539.31/13,446.82
  6. Step 6: Final answer
    x = 10,319.95

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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.