Home / 12,448.82-18,684.95-8,291.75

Finding the Fourth Proportional to 12,448.82, 18,684.95 and 8,291.75

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Solution

The fourth proportional to 12,448.82, 18,684.95 and 8,291.75 is: 12,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,448.82 : 18,684.95 = 8,291.75 : x
  2. Step 2: Convert to fraction form
    12,448.82/18,684.95 = 8,291.75/x
  3. Step 3: Cross multiply
    12,448.82x = 18,684.95 × 8,291.75
  4. Step 4: Simplify right side
    12,448.82x = 154,930,799.28
  5. Step 5: Solve for x
    x = 154,930,799.28/12,448.82
  6. Step 6: Final answer
    x = 12,445.43

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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.