Home / 39,723.19-54,815.83-21,815.31

Finding the Fourth Proportional to 39,723.19, 54,815.83 and 21,815.31

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Solution

The fourth proportional to 39,723.19, 54,815.83 and 21,815.31 is: 30,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.19 : 54,815.83 = 21,815.31 : x
  2. Step 2: Convert to fraction form
    39,723.19/54,815.83 = 21,815.31/x
  3. Step 3: Cross multiply
    39,723.19x = 54,815.83 × 21,815.31
  4. Step 4: Simplify right side
    39,723.19x = 1,195,824,324.36
  5. Step 5: Solve for x
    x = 1,195,824,324.36/39,723.19
  6. Step 6: Final answer
    x = 30,103.93

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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.