Home / 20,099.49-27,740.48-12,142.86

Finding the Fourth Proportional to 20,099.49, 27,740.48 and 12,142.86

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Solution

The fourth proportional to 20,099.49, 27,740.48 and 12,142.86 is: 16,759.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.49 : 27,740.48 = 12,142.86 : x
  2. Step 2: Convert to fraction form
    20,099.49/27,740.48 = 12,142.86/x
  3. Step 3: Cross multiply
    20,099.49x = 27,740.48 × 12,142.86
  4. Step 4: Simplify right side
    20,099.49x = 336,848,704.26
  5. Step 5: Solve for x
    x = 336,848,704.26/20,099.49
  6. Step 6: Final answer
    x = 16,759.07

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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.