Home / 13,422.34-18,524.45-8,117.65

Finding the Fourth Proportional to 13,422.34, 18,524.45 and 8,117.65

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Solution

The fourth proportional to 13,422.34, 18,524.45 and 8,117.65 is: 11,203.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.34 : 18,524.45 = 8,117.65 : x
  2. Step 2: Convert to fraction form
    13,422.34/18,524.45 = 8,117.65/x
  3. Step 3: Cross multiply
    13,422.34x = 18,524.45 × 8,117.65
  4. Step 4: Simplify right side
    13,422.34x = 150,374,868.33
  5. Step 5: Solve for x
    x = 150,374,868.33/13,422.34
  6. Step 6: Final answer
    x = 11,203.33

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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.