Home / 13,743.06-18,965.84-7,774.61

Finding the Fourth Proportional to 13,743.06, 18,965.84 and 7,774.61

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Solution

The fourth proportional to 13,743.06, 18,965.84 and 7,774.61 is: 10,729.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.06 : 18,965.84 = 7,774.61 : x
  2. Step 2: Convert to fraction form
    13,743.06/18,965.84 = 7,774.61/x
  3. Step 3: Cross multiply
    13,743.06x = 18,965.84 × 7,774.61
  4. Step 4: Simplify right side
    13,743.06x = 147,451,933.93
  5. Step 5: Solve for x
    x = 147,451,933.93/13,743.06
  6. Step 6: Final answer
    x = 10,729.19

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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.