Home / 38,149.20-57,218.40-11,856.60

Finding the Fourth Proportional to 38,149.20, 57,218.40 and 11,856.60

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Solution

The fourth proportional to 38,149.20, 57,218.40 and 11,856.60 is: 17,783.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,149.20 : 57,218.40 = 11,856.60 : x
  2. Step 2: Convert to fraction form
    38,149.20/57,218.40 = 11,856.60/x
  3. Step 3: Cross multiply
    38,149.20x = 57,218.40 × 11,856.60
  4. Step 4: Simplify right side
    38,149.20x = 678,415,681.44
  5. Step 5: Solve for x
    x = 678,415,681.44/38,149.20
  6. Step 6: Final answer
    x = 17,783.22

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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.