Home / 38,128.17-57,229.20-18,420.60

Finding the Fourth Proportional to 38,128.17, 57,229.20 and 18,420.60

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Solution

The fourth proportional to 38,128.17, 57,229.20 and 18,420.60 is: 27,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,128.17 : 57,229.20 = 18,420.60 : x
  2. Step 2: Convert to fraction form
    38,128.17/57,229.20 = 18,420.60/x
  3. Step 3: Cross multiply
    38,128.17x = 57,229.20 × 18,420.60
  4. Step 4: Simplify right side
    38,128.17x = 1,054,196,201.52
  5. Step 5: Solve for x
    x = 1,054,196,201.52/38,128.17
  6. Step 6: Final answer
    x = 27,648.75

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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.