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Finding the Fourth Proportional to 13,940.58, 20,904.14 and 8,098.86

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Solution

The fourth proportional to 13,940.58, 20,904.14 and 8,098.86 is: 12,144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.58 : 20,904.14 = 8,098.86 : x
  2. Step 2: Convert to fraction form
    13,940.58/20,904.14 = 8,098.86/x
  3. Step 3: Cross multiply
    13,940.58x = 20,904.14 × 8,098.86
  4. Step 4: Simplify right side
    13,940.58x = 169,299,703.28
  5. Step 5: Solve for x
    x = 169,299,703.28/13,940.58
  6. Step 6: Final answer
    x = 12,144.38

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1.5x scale

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.