Home / 39,875.29-55,028.36-21,969.83

Finding the Fourth Proportional to 39,875.29, 55,028.36 and 21,969.83

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Solution

The fourth proportional to 39,875.29, 55,028.36 and 21,969.83 is: 30,318.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.29 : 55,028.36 = 21,969.83 : x
  2. Step 2: Convert to fraction form
    39,875.29/55,028.36 = 21,969.83/x
  3. Step 3: Cross multiply
    39,875.29x = 55,028.36 × 21,969.83
  4. Step 4: Simplify right side
    39,875.29x = 1,208,963,906.87
  5. Step 5: Solve for x
    x = 1,208,963,906.87/39,875.29
  6. Step 6: Final answer
    x = 30,318.63

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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.