Home / 26,362.78-39,485.37-20,399.11

Finding the Fourth Proportional to 26,362.78, 39,485.37 and 20,399.11

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Solution

The fourth proportional to 26,362.78, 39,485.37 and 20,399.11 is: 30,553.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,362.78 : 39,485.37 = 20,399.11 : x
  2. Step 2: Convert to fraction form
    26,362.78/39,485.37 = 20,399.11/x
  3. Step 3: Cross multiply
    26,362.78x = 39,485.37 × 20,399.11
  4. Step 4: Simplify right side
    26,362.78x = 805,466,406.02
  5. Step 5: Solve for x
    x = 805,466,406.02/26,362.78
  6. Step 6: Final answer
    x = 30,553.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.