Home / 39,815.36-54,947.63-21,914.31

Finding the Fourth Proportional to 39,815.36, 54,947.63 and 21,914.31

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Solution

The fourth proportional to 39,815.36, 54,947.63 and 21,914.31 is: 30,243.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.36 : 54,947.63 = 21,914.31 : x
  2. Step 2: Convert to fraction form
    39,815.36/54,947.63 = 21,914.31/x
  3. Step 3: Cross multiply
    39,815.36x = 54,947.63 × 21,914.31
  4. Step 4: Simplify right side
    39,815.36x = 1,204,139,452.37
  5. Step 5: Solve for x
    x = 1,204,139,452.37/39,815.36
  6. Step 6: Final answer
    x = 30,243.09

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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.