Home / 19,940.77-29,917.95-12,536.56

Finding the Fourth Proportional to 19,940.77, 29,917.95 and 12,536.56

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Solution

The fourth proportional to 19,940.77, 29,917.95 and 12,536.56 is: 18,809.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.77 : 29,917.95 = 12,536.56 : x
  2. Step 2: Convert to fraction form
    19,940.77/29,917.95 = 12,536.56/x
  3. Step 3: Cross multiply
    19,940.77x = 29,917.95 × 12,536.56
  4. Step 4: Simplify right side
    19,940.77x = 375,068,175.25
  5. Step 5: Solve for x
    x = 375,068,175.25/19,940.77
  6. Step 6: Final answer
    x = 18,809.11

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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.