Home / 12,617.85-18,929.70-4,297.94

Finding the Fourth Proportional to 12,617.85, 18,929.70 and 4,297.94

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Solution

The fourth proportional to 12,617.85, 18,929.70 and 4,297.94 is: 6,447.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.85 : 18,929.70 = 4,297.94 : x
  2. Step 2: Convert to fraction form
    12,617.85/18,929.70 = 4,297.94/x
  3. Step 3: Cross multiply
    12,617.85x = 18,929.70 × 4,297.94
  4. Step 4: Simplify right side
    12,617.85x = 81,358,714.82
  5. Step 5: Solve for x
    x = 81,358,714.82/12,617.85
  6. Step 6: Final answer
    x = 6,447.91

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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.