Home / 13,518.40-20,272.68-5,194.12

Finding the Fourth Proportional to 13,518.40, 20,272.68 and 5,194.12

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Solution

The fourth proportional to 13,518.40, 20,272.68 and 5,194.12 is: 7,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.40 : 20,272.68 = 5,194.12 : x
  2. Step 2: Convert to fraction form
    13,518.40/20,272.68 = 5,194.12/x
  3. Step 3: Cross multiply
    13,518.40x = 20,272.68 × 5,194.12
  4. Step 4: Simplify right side
    13,518.40x = 105,298,732.64
  5. Step 5: Solve for x
    x = 105,298,732.64/13,518.40
  6. Step 6: Final answer
    x = 7,789.29

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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.