Home / 12,760.12-19,131.87-4,439.50

Finding the Fourth Proportional to 12,760.12, 19,131.87 and 4,439.50

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Solution

The fourth proportional to 12,760.12, 19,131.87 and 4,439.50 is: 6,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.12 : 19,131.87 = 4,439.50 : x
  2. Step 2: Convert to fraction form
    12,760.12/19,131.87 = 4,439.50/x
  3. Step 3: Cross multiply
    12,760.12x = 19,131.87 × 4,439.50
  4. Step 4: Simplify right side
    12,760.12x = 84,935,936.87
  5. Step 5: Solve for x
    x = 84,935,936.87/12,760.12
  6. Step 6: Final answer
    x = 6,656.36

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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.