Home / 13,707.58-18,917.07-7,739.30

Finding the Fourth Proportional to 13,707.58, 18,917.07 and 7,739.30

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Solution

The fourth proportional to 13,707.58, 18,917.07 and 7,739.30 is: 10,680.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.58 : 18,917.07 = 7,739.30 : x
  2. Step 2: Convert to fraction form
    13,707.58/18,917.07 = 7,739.30/x
  3. Step 3: Cross multiply
    13,707.58x = 18,917.07 × 7,739.30
  4. Step 4: Simplify right side
    13,707.58x = 146,404,879.85
  5. Step 5: Solve for x
    x = 146,404,879.85/13,707.58
  6. Step 6: Final answer
    x = 10,680.58

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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.