Home / 12,407.85-18,611.64-3,642.44

Finding the Fourth Proportional to 12,407.85, 18,611.64 and 3,642.44

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Solution

The fourth proportional to 12,407.85, 18,611.64 and 3,642.44 is: 5,463.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.85 : 18,611.64 = 3,642.44 : x
  2. Step 2: Convert to fraction form
    12,407.85/18,611.64 = 3,642.44/x
  3. Step 3: Cross multiply
    12,407.85x = 18,611.64 × 3,642.44
  4. Step 4: Simplify right side
    12,407.85x = 67,791,688.94
  5. Step 5: Solve for x
    x = 67,791,688.94/12,407.85
  6. Step 6: Final answer
    x = 5,463.61

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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.