Home / 20,739.36-31,112.46-7,610.16

Finding the Fourth Proportional to 20,739.36, 31,112.46 and 7,610.16

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Solution

The fourth proportional to 20,739.36, 31,112.46 and 7,610.16 is: 11,416.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.36 : 31,112.46 = 7,610.16 : x
  2. Step 2: Convert to fraction form
    20,739.36/31,112.46 = 7,610.16/x
  3. Step 3: Cross multiply
    20,739.36x = 31,112.46 × 7,610.16
  4. Step 4: Simplify right side
    20,739.36x = 236,770,798.59
  5. Step 5: Solve for x
    x = 236,770,798.59/20,739.36
  6. Step 6: Final answer
    x = 11,416.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.