Home / 12,236.81-18,357.91-3,917.50

Finding the Fourth Proportional to 12,236.81, 18,357.91 and 3,917.50

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Solution

The fourth proportional to 12,236.81, 18,357.91 and 3,917.50 is: 5,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.81 : 18,357.91 = 3,917.50 : x
  2. Step 2: Convert to fraction form
    12,236.81/18,357.91 = 3,917.50/x
  3. Step 3: Cross multiply
    12,236.81x = 18,357.91 × 3,917.50
  4. Step 4: Simplify right side
    12,236.81x = 71,917,056.74
  5. Step 5: Solve for x
    x = 71,917,056.74/12,236.81
  6. Step 6: Final answer
    x = 5,877.11

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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.