Home / 12,917.88-19,374.26-3,555.50

Finding the Fourth Proportional to 12,917.88, 19,374.26 and 3,555.50

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Solution

The fourth proportional to 12,917.88, 19,374.26 and 3,555.50 is: 5,332.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.88 : 19,374.26 = 3,555.50 : x
  2. Step 2: Convert to fraction form
    12,917.88/19,374.26 = 3,555.50/x
  3. Step 3: Cross multiply
    12,917.88x = 19,374.26 × 3,555.50
  4. Step 4: Simplify right side
    12,917.88x = 68,885,181.43
  5. Step 5: Solve for x
    x = 68,885,181.43/12,917.88
  6. Step 6: Final answer
    x = 5,332.55

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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.