Home / 12,746.22-19,119.32-3,981.88

Finding the Fourth Proportional to 12,746.22, 19,119.32 and 3,981.88

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Solution

The fourth proportional to 12,746.22, 19,119.32 and 3,981.88 is: 5,972.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.22 : 19,119.32 = 3,981.88 : x
  2. Step 2: Convert to fraction form
    12,746.22/19,119.32 = 3,981.88/x
  3. Step 3: Cross multiply
    12,746.22x = 19,119.32 × 3,981.88
  4. Step 4: Simplify right side
    12,746.22x = 76,130,837.92
  5. Step 5: Solve for x
    x = 76,130,837.92/12,746.22
  6. Step 6: Final answer
    x = 5,972.82

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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.