Home / 12,742.25-19,113.30-3,857.56

Finding the Fourth Proportional to 12,742.25, 19,113.30 and 3,857.56

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Solution

The fourth proportional to 12,742.25, 19,113.30 and 3,857.56 is: 5,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.25 : 19,113.30 = 3,857.56 : x
  2. Step 2: Convert to fraction form
    12,742.25/19,113.30 = 3,857.56/x
  3. Step 3: Cross multiply
    12,742.25x = 19,113.30 × 3,857.56
  4. Step 4: Simplify right side
    12,742.25x = 73,730,653.76
  5. Step 5: Solve for x
    x = 73,730,653.76/12,742.25
  6. Step 6: Final answer
    x = 5,786.32

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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.