Home / 38,121.20-57,181.80-10,419.20

Finding the Fourth Proportional to 38,121.20, 57,181.80 and 10,419.20

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Solution

The fourth proportional to 38,121.20, 57,181.80 and 10,419.20 is: 15,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.20 : 57,181.80 = 10,419.20 : x
  2. Step 2: Convert to fraction form
    38,121.20/57,181.80 = 10,419.20/x
  3. Step 3: Cross multiply
    38,121.20x = 57,181.80 × 10,419.20
  4. Step 4: Simplify right side
    38,121.20x = 595,788,610.56
  5. Step 5: Solve for x
    x = 595,788,610.56/38,121.20
  6. Step 6: Final answer
    x = 15,628.80

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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.