Home / 31,945.78-44,112.90-20,029.60

Finding the Fourth Proportional to 31,945.78, 44,112.90 and 20,029.60

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Solution

The fourth proportional to 31,945.78, 44,112.90 and 20,029.60 is: 27,658.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,945.78 : 44,112.90 = 20,029.60 : x
  2. Step 2: Convert to fraction form
    31,945.78/44,112.90 = 20,029.60/x
  3. Step 3: Cross multiply
    31,945.78x = 44,112.90 × 20,029.60
  4. Step 4: Simplify right side
    31,945.78x = 883,563,741.84
  5. Step 5: Solve for x
    x = 883,563,741.84/31,945.78
  6. Step 6: Final answer
    x = 27,658.23

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1.5x scale

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.