Home / 20,440.44-28,181.77-13,715.41

Finding the Fourth Proportional to 20,440.44, 28,181.77 and 13,715.41

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Solution

The fourth proportional to 20,440.44, 28,181.77 and 13,715.41 is: 18,909.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.44 : 28,181.77 = 13,715.41 : x
  2. Step 2: Convert to fraction form
    20,440.44/28,181.77 = 13,715.41/x
  3. Step 3: Cross multiply
    20,440.44x = 28,181.77 × 13,715.41
  4. Step 4: Simplify right side
    20,440.44x = 386,524,530.08
  5. Step 5: Solve for x
    x = 386,524,530.08/20,440.44
  6. Step 6: Final answer
    x = 18,909.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.