Home / 12,742.64-19,110.12-4,949.60

Finding the Fourth Proportional to 12,742.64, 19,110.12 and 4,949.60

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Solution

The fourth proportional to 12,742.64, 19,110.12 and 4,949.60 is: 7,422.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.64 : 19,110.12 = 4,949.60 : x
  2. Step 2: Convert to fraction form
    12,742.64/19,110.12 = 4,949.60/x
  3. Step 3: Cross multiply
    12,742.64x = 19,110.12 × 4,949.60
  4. Step 4: Simplify right side
    12,742.64x = 94,587,449.95
  5. Step 5: Solve for x
    x = 94,587,449.95/12,742.64
  6. Step 6: Final answer
    x = 7,422.91

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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.