Home / 13,942.17-20,917.35-5,617.91

Finding the Fourth Proportional to 13,942.17, 20,917.35 and 5,617.91

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Solution

The fourth proportional to 13,942.17, 20,917.35 and 5,617.91 is: 8,428.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.17 : 20,917.35 = 5,617.91 : x
  2. Step 2: Convert to fraction form
    13,942.17/20,917.35 = 5,617.91/x
  3. Step 3: Cross multiply
    13,942.17x = 20,917.35 × 5,617.91
  4. Step 4: Simplify right side
    13,942.17x = 117,511,842.03
  5. Step 5: Solve for x
    x = 117,511,842.03/13,942.17
  6. Step 6: Final answer
    x = 8,428.52

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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.