Home / 13,942.41-20,917.70-5,618.14

Finding the Fourth Proportional to 13,942.41, 20,917.70 and 5,618.14

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Solution

The fourth proportional to 13,942.41, 20,917.70 and 5,618.14 is: 8,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.41 : 20,917.70 = 5,618.14 : x
  2. Step 2: Convert to fraction form
    13,942.41/20,917.70 = 5,618.14/x
  3. Step 3: Cross multiply
    13,942.41x = 20,917.70 × 5,618.14
  4. Step 4: Simplify right side
    13,942.41x = 117,518,567.08
  5. Step 5: Solve for x
    x = 117,518,567.08/13,942.41
  6. Step 6: Final answer
    x = 8,428.86

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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.