Home / 39,958.10-55,123.90-23,181.38

Finding the Fourth Proportional to 39,958.10, 55,123.90 and 23,181.38

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Solution

The fourth proportional to 39,958.10, 55,123.90 and 23,181.38 is: 31,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,958.10 : 55,123.90 = 23,181.38 : x
  2. Step 2: Convert to fraction form
    39,958.10/55,123.90 = 23,181.38/x
  3. Step 3: Cross multiply
    39,958.10x = 55,123.90 × 23,181.38
  4. Step 4: Simplify right side
    39,958.10x = 1,277,847,739.41
  5. Step 5: Solve for x
    x = 1,277,847,739.41/39,958.10
  6. Step 6: Final answer
    x = 31,979.70

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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.