Home / 13,735.48-18,956.13-7,768.21

Finding the Fourth Proportional to 13,735.48, 18,956.13 and 7,768.21

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Solution

The fourth proportional to 13,735.48, 18,956.13 and 7,768.21 is: 10,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,735.48 : 18,956.13 = 7,768.21 : x
  2. Step 2: Convert to fraction form
    13,735.48/18,956.13 = 7,768.21/x
  3. Step 3: Cross multiply
    13,735.48x = 18,956.13 × 7,768.21
  4. Step 4: Simplify right side
    13,735.48x = 147,255,103.85
  5. Step 5: Solve for x
    x = 147,255,103.85/13,735.48
  6. Step 6: Final answer
    x = 10,720.79

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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.