Home / 12,760.20-19,139.76-3,994.92

Finding the Fourth Proportional to 12,760.20, 19,139.76 and 3,994.92

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Solution

The fourth proportional to 12,760.20, 19,139.76 and 3,994.92 is: 5,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.20 : 19,139.76 = 3,994.92 : x
  2. Step 2: Convert to fraction form
    12,760.20/19,139.76 = 3,994.92/x
  3. Step 3: Cross multiply
    12,760.20x = 19,139.76 × 3,994.92
  4. Step 4: Simplify right side
    12,760.20x = 76,461,810.02
  5. Step 5: Solve for x
    x = 76,461,810.02/12,760.20
  6. Step 6: Final answer
    x = 5,992.21

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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.