Home / 13,707.36-18,914.13-7,738.90

Finding the Fourth Proportional to 13,707.36, 18,914.13 and 7,738.90

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Solution

The fourth proportional to 13,707.36, 18,914.13 and 7,738.90 is: 10,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.36 : 18,914.13 = 7,738.90 : x
  2. Step 2: Convert to fraction form
    13,707.36/18,914.13 = 7,738.90/x
  3. Step 3: Cross multiply
    13,707.36x = 18,914.13 × 7,738.90
  4. Step 4: Simplify right side
    13,707.36x = 146,374,668.13
  5. Step 5: Solve for x
    x = 146,374,668.13/13,707.36
  6. Step 6: Final answer
    x = 10,678.54

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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.