Home / 31,187.51-43,057.83-20,296.02

Finding the Fourth Proportional to 31,187.51, 43,057.83 and 20,296.02

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Solution

The fourth proportional to 31,187.51, 43,057.83 and 20,296.02 is: 28,020.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,187.51 : 43,057.83 = 20,296.02 : x
  2. Step 2: Convert to fraction form
    31,187.51/43,057.83 = 20,296.02/x
  3. Step 3: Cross multiply
    31,187.51x = 43,057.83 × 20,296.02
  4. Step 4: Simplify right side
    31,187.51x = 873,902,477.36
  5. Step 5: Solve for x
    x = 873,902,477.36/31,187.51
  6. Step 6: Final answer
    x = 28,020.92

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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.