Home / 13,742.67-20,613.78-4,382.58

Finding the Fourth Proportional to 13,742.67, 20,613.78 and 4,382.58

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Solution

The fourth proportional to 13,742.67, 20,613.78 and 4,382.58 is: 6,573.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.67 : 20,613.78 = 4,382.58 : x
  2. Step 2: Convert to fraction form
    13,742.67/20,613.78 = 4,382.58/x
  3. Step 3: Cross multiply
    13,742.67x = 20,613.78 × 4,382.58
  4. Step 4: Simplify right side
    13,742.67x = 90,341,539.95
  5. Step 5: Solve for x
    x = 90,341,539.95/13,742.67
  6. Step 6: Final answer
    x = 6,573.80

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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.