Home / 12,786.08-17,652.88-8,805.92

Finding the Fourth Proportional to 12,786.08, 17,652.88 and 8,805.92

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Solution

The fourth proportional to 12,786.08, 17,652.88 and 8,805.92 is: 12,157.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.08 : 17,652.88 = 8,805.92 : x
  2. Step 2: Convert to fraction form
    12,786.08/17,652.88 = 8,805.92/x
  3. Step 3: Cross multiply
    12,786.08x = 17,652.88 × 8,805.92
  4. Step 4: Simplify right side
    12,786.08x = 155,449,849.05
  5. Step 5: Solve for x
    x = 155,449,849.05/12,786.08
  6. Step 6: Final answer
    x = 12,157.74

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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.