Home / 12,753.64-19,131.90-3,986.92

Finding the Fourth Proportional to 12,753.64, 19,131.90 and 3,986.92

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Solution

The fourth proportional to 12,753.64, 19,131.90 and 3,986.92 is: 5,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,753.64 : 19,131.90 = 3,986.92 : x
  2. Step 2: Convert to fraction form
    12,753.64/19,131.90 = 3,986.92/x
  3. Step 3: Cross multiply
    12,753.64x = 19,131.90 × 3,986.92
  4. Step 4: Simplify right side
    12,753.64x = 76,277,354.75
  5. Step 5: Solve for x
    x = 76,277,354.75/12,753.64
  6. Step 6: Final answer
    x = 5,980.83

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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.