Home / 39,810.04-54,936.32-21,904

Finding the Fourth Proportional to 39,810.04, 54,936.32 and 21,904

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Solution

The fourth proportional to 39,810.04, 54,936.32 and 21,904 is: 30,226.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,810.04 : 54,936.32 = 21,904 : x
  2. Step 2: Convert to fraction form
    39,810.04/54,936.32 = 21,904/x
  3. Step 3: Cross multiply
    39,810.04x = 54,936.32 × 21,904
  4. Step 4: Simplify right side
    39,810.04x = 1,203,325,153.28
  5. Step 5: Solve for x
    x = 1,203,325,153.28/39,810.04
  6. Step 6: Final answer
    x = 30,226.68

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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.