Home / 39,033.84-53,866.38-21,128.43

Finding the Fourth Proportional to 39,033.84, 53,866.38 and 21,128.43

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Solution

The fourth proportional to 39,033.84, 53,866.38 and 21,128.43 is: 29,157.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.84 : 53,866.38 = 21,128.43 : x
  2. Step 2: Convert to fraction form
    39,033.84/53,866.38 = 21,128.43/x
  3. Step 3: Cross multiply
    39,033.84x = 53,866.38 × 21,128.43
  4. Step 4: Simplify right side
    39,033.84x = 1,138,112,039.18
  5. Step 5: Solve for x
    x = 1,138,112,039.18/39,033.84
  6. Step 6: Final answer
    x = 29,157.06

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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.