Home / 36,138.40-54,224.64-12,775.84

Finding the Fourth Proportional to 36,138.40, 54,224.64 and 12,775.84

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Solution

The fourth proportional to 36,138.40, 54,224.64 and 12,775.84 is: 19,169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.40 : 54,224.64 = 12,775.84 : x
  2. Step 2: Convert to fraction form
    36,138.40/54,224.64 = 12,775.84/x
  3. Step 3: Cross multiply
    36,138.40x = 54,224.64 × 12,775.84
  4. Step 4: Simplify right side
    36,138.40x = 692,765,324.70
  5. Step 5: Solve for x
    x = 692,765,324.70/36,138.40
  6. Step 6: Final answer
    x = 19,169.78

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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.