Home / 12,750.80-19,119.60-3,983.36

Finding the Fourth Proportional to 12,750.80, 19,119.60 and 3,983.36

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Solution

The fourth proportional to 12,750.80, 19,119.60 and 3,983.36 is: 5,972.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.80 : 19,119.60 = 3,983.36 : x
  2. Step 2: Convert to fraction form
    12,750.80/19,119.60 = 3,983.36/x
  3. Step 3: Cross multiply
    12,750.80x = 19,119.60 × 3,983.36
  4. Step 4: Simplify right side
    12,750.80x = 76,160,249.86
  5. Step 5: Solve for x
    x = 76,160,249.86/12,750.80
  6. Step 6: Final answer
    x = 5,972.98

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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.