Home / 13,575.34-18,716.50-8,786.80

Finding the Fourth Proportional to 13,575.34, 18,716.50 and 8,786.80

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Solution

The fourth proportional to 13,575.34, 18,716.50 and 8,786.80 is: 12,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.34 : 18,716.50 = 8,786.80 : x
  2. Step 2: Convert to fraction form
    13,575.34/18,716.50 = 8,786.80/x
  3. Step 3: Cross multiply
    13,575.34x = 18,716.50 × 8,786.80
  4. Step 4: Simplify right side
    13,575.34x = 164,458,142.20
  5. Step 5: Solve for x
    x = 164,458,142.20/13,575.34
  6. Step 6: Final answer
    x = 12,114.48

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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.