Home / 45,120.82-67,687.80-13,958.50

Finding the Fourth Proportional to 45,120.82, 67,687.80 and 13,958.50

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Solution

The fourth proportional to 45,120.82, 67,687.80 and 13,958.50 is: 20,939.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,120.82 : 67,687.80 = 13,958.50 : x
  2. Step 2: Convert to fraction form
    45,120.82/67,687.80 = 13,958.50/x
  3. Step 3: Cross multiply
    45,120.82x = 67,687.80 × 13,958.50
  4. Step 4: Simplify right side
    45,120.82x = 944,820,156.30
  5. Step 5: Solve for x
    x = 944,820,156.30/45,120.82
  6. Step 6: Final answer
    x = 20,939.78

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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.