Home / 20,669.47-31,009.27-6,629.54

Finding the Fourth Proportional to 20,669.47, 31,009.27 and 6,629.54

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Solution

The fourth proportional to 20,669.47, 31,009.27 and 6,629.54 is: 9,945.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.47 : 31,009.27 = 6,629.54 : x
  2. Step 2: Convert to fraction form
    20,669.47/31,009.27 = 6,629.54/x
  3. Step 3: Cross multiply
    20,669.47x = 31,009.27 × 6,629.54
  4. Step 4: Simplify right side
    20,669.47x = 205,577,195.84
  5. Step 5: Solve for x
    x = 205,577,195.84/20,669.47
  6. Step 6: Final answer
    x = 9,945.93

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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.