Home / 38,419.20-57,661.20-18,714.60

Finding the Fourth Proportional to 38,419.20, 57,661.20 and 18,714.60

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Solution

The fourth proportional to 38,419.20, 57,661.20 and 18,714.60 is: 28,087.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,419.20 : 57,661.20 = 18,714.60 : x
  2. Step 2: Convert to fraction form
    38,419.20/57,661.20 = 18,714.60/x
  3. Step 3: Cross multiply
    38,419.20x = 57,661.20 × 18,714.60
  4. Step 4: Simplify right side
    38,419.20x = 1,079,106,293.52
  5. Step 5: Solve for x
    x = 1,079,106,293.52/38,419.20
  6. Step 6: Final answer
    x = 28,087.68

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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.