Home / 12,305.16-16,980.90-6,999.86

Finding the Fourth Proportional to 12,305.16, 16,980.90 and 6,999.86

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Solution

The fourth proportional to 12,305.16, 16,980.90 and 6,999.86 is: 9,659.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.16 : 16,980.90 = 6,999.86 : x
  2. Step 2: Convert to fraction form
    12,305.16/16,980.90 = 6,999.86/x
  3. Step 3: Cross multiply
    12,305.16x = 16,980.90 × 6,999.86
  4. Step 4: Simplify right side
    12,305.16x = 118,863,922.67
  5. Step 5: Solve for x
    x = 118,863,922.67/12,305.16
  6. Step 6: Final answer
    x = 9,659.68

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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.