Home / 38,138.60-57,213.30-11,840.60

Finding the Fourth Proportional to 38,138.60, 57,213.30 and 11,840.60

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Solution

The fourth proportional to 38,138.60, 57,213.30 and 11,840.60 is: 17,762.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.60 : 57,213.30 = 11,840.60 : x
  2. Step 2: Convert to fraction form
    38,138.60/57,213.30 = 11,840.60/x
  3. Step 3: Cross multiply
    38,138.60x = 57,213.30 × 11,840.60
  4. Step 4: Simplify right side
    38,138.60x = 677,439,799.98
  5. Step 5: Solve for x
    x = 677,439,799.98/38,138.60
  6. Step 6: Final answer
    x = 17,762.58

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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.