Home / 38,146.60-57,203.70-18,431.20

Finding the Fourth Proportional to 38,146.60, 57,203.70 and 18,431.20

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Solution

The fourth proportional to 38,146.60, 57,203.70 and 18,431.20 is: 27,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,146.60 : 57,203.70 = 18,431.20 : x
  2. Step 2: Convert to fraction form
    38,146.60/57,203.70 = 18,431.20/x
  3. Step 3: Cross multiply
    38,146.60x = 57,203.70 × 18,431.20
  4. Step 4: Simplify right side
    38,146.60x = 1,054,332,835.44
  5. Step 5: Solve for x
    x = 1,054,332,835.44/38,146.60
  6. Step 6: Final answer
    x = 27,638.97

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1.5x scale

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.