Home / 12,939.93-19,405.80-5,542.43

Finding the Fourth Proportional to 12,939.93, 19,405.80 and 5,542.43

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Solution

The fourth proportional to 12,939.93, 19,405.80 and 5,542.43 is: 8,311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.93 : 19,405.80 = 5,542.43 : x
  2. Step 2: Convert to fraction form
    12,939.93/19,405.80 = 5,542.43/x
  3. Step 3: Cross multiply
    12,939.93x = 19,405.80 × 5,542.43
  4. Step 4: Simplify right side
    12,939.93x = 107,555,191.07
  5. Step 5: Solve for x
    x = 107,555,191.07/12,939.93
  6. Step 6: Final answer
    x = 8,311.88

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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.