Home / 39,866.65-55,015.31-21,963.32

Finding the Fourth Proportional to 39,866.65, 55,015.31 and 21,963.32

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Solution

The fourth proportional to 39,866.65, 55,015.31 and 21,963.32 is: 30,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,866.65 : 55,015.31 = 21,963.32 : x
  2. Step 2: Convert to fraction form
    39,866.65/55,015.31 = 21,963.32/x
  3. Step 3: Cross multiply
    39,866.65x = 55,015.31 × 21,963.32
  4. Step 4: Simplify right side
    39,866.65x = 1,208,318,844.57
  5. Step 5: Solve for x
    x = 1,208,318,844.57/39,866.65
  6. Step 6: Final answer
    x = 30,309.02

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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.