Home / 12,305.12-16,995.20-8,962.88

Finding the Fourth Proportional to 12,305.12, 16,995.20 and 8,962.88

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Solution

The fourth proportional to 12,305.12, 16,995.20 and 8,962.88 is: 12,379.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.12 : 16,995.20 = 8,962.88 : x
  2. Step 2: Convert to fraction form
    12,305.12/16,995.20 = 8,962.88/x
  3. Step 3: Cross multiply
    12,305.12x = 16,995.20 × 8,962.88
  4. Step 4: Simplify right side
    12,305.12x = 152,325,938.18
  5. Step 5: Solve for x
    x = 152,325,938.18/12,305.12
  6. Step 6: Final answer
    x = 12,379.07

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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.