Home / 12,741.90-19,115.58-3,856.48

Finding the Fourth Proportional to 12,741.90, 19,115.58 and 3,856.48

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Solution

The fourth proportional to 12,741.90, 19,115.58 and 3,856.48 is: 5,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,741.90 : 19,115.58 = 3,856.48 : x
  2. Step 2: Convert to fraction form
    12,741.90/19,115.58 = 3,856.48/x
  3. Step 3: Cross multiply
    12,741.90x = 19,115.58 × 3,856.48
  4. Step 4: Simplify right side
    12,741.90x = 73,718,851.96
  5. Step 5: Solve for x
    x = 73,718,851.96/12,741.90
  6. Step 6: Final answer
    x = 5,785.55

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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.