Home / 13,620.03-18,797.31-8,316.96

Finding the Fourth Proportional to 13,620.03, 18,797.31 and 8,316.96

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Solution

The fourth proportional to 13,620.03, 18,797.31 and 8,316.96 is: 11,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.03 : 18,797.31 = 8,316.96 : x
  2. Step 2: Convert to fraction form
    13,620.03/18,797.31 = 8,316.96/x
  3. Step 3: Cross multiply
    13,620.03x = 18,797.31 × 8,316.96
  4. Step 4: Simplify right side
    13,620.03x = 156,336,475.38
  5. Step 5: Solve for x
    x = 156,336,475.38/13,620.03
  6. Step 6: Final answer
    x = 11,478.42

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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.