Home / 13,346.73-18,418.38-7,378.56

Finding the Fourth Proportional to 13,346.73, 18,418.38 and 7,378.56

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Solution

The fourth proportional to 13,346.73, 18,418.38 and 7,378.56 is: 10,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.73 : 18,418.38 = 7,378.56 : x
  2. Step 2: Convert to fraction form
    13,346.73/18,418.38 = 7,378.56/x
  3. Step 3: Cross multiply
    13,346.73x = 18,418.38 × 7,378.56
  4. Step 4: Simplify right side
    13,346.73x = 135,901,121.93
  5. Step 5: Solve for x
    x = 135,901,121.93/13,346.73
  6. Step 6: Final answer
    x = 10,182.35

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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.