Home / 13,930.07-20,900.44-8,387.38

Finding the Fourth Proportional to 13,930.07, 20,900.44 and 8,387.38

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Solution

The fourth proportional to 13,930.07, 20,900.44 and 8,387.38 is: 12,584.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.07 : 20,900.44 = 8,387.38 : x
  2. Step 2: Convert to fraction form
    13,930.07/20,900.44 = 8,387.38/x
  3. Step 3: Cross multiply
    13,930.07x = 20,900.44 × 8,387.38
  4. Step 4: Simplify right side
    13,930.07x = 175,299,827.95
  5. Step 5: Solve for x
    x = 175,299,827.95/13,930.07
  6. Step 6: Final answer
    x = 12,584.27

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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.