Home / 37,146.12-51,258.60-20,379.12

Finding the Fourth Proportional to 37,146.12, 51,258.60 and 20,379.12

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Solution

The fourth proportional to 37,146.12, 51,258.60 and 20,379.12 is: 28,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,146.12 : 51,258.60 = 20,379.12 : x
  2. Step 2: Convert to fraction form
    37,146.12/51,258.60 = 20,379.12/x
  3. Step 3: Cross multiply
    37,146.12x = 51,258.60 × 20,379.12
  4. Step 4: Simplify right side
    37,146.12x = 1,044,605,160.43
  5. Step 5: Solve for x
    x = 1,044,605,160.43/37,146.12
  6. Step 6: Final answer
    x = 28,121.51

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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.