Home / 13,326.38-18,390.99-7,662.96

Finding the Fourth Proportional to 13,326.38, 18,390.99 and 7,662.96

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Solution

The fourth proportional to 13,326.38, 18,390.99 and 7,662.96 is: 10,575.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.38 : 18,390.99 = 7,662.96 : x
  2. Step 2: Convert to fraction form
    13,326.38/18,390.99 = 7,662.96/x
  3. Step 3: Cross multiply
    13,326.38x = 18,390.99 × 7,662.96
  4. Step 4: Simplify right side
    13,326.38x = 140,929,420.73
  5. Step 5: Solve for x
    x = 140,929,420.73/13,326.38
  6. Step 6: Final answer
    x = 10,575.23

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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.