Home / 11,817.80-16,309.28-6,512.61

Finding the Fourth Proportional to 11,817.80, 16,309.28 and 6,512.61

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Solution

The fourth proportional to 11,817.80, 16,309.28 and 6,512.61 is: 8,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.80 : 16,309.28 = 6,512.61 : x
  2. Step 2: Convert to fraction form
    11,817.80/16,309.28 = 6,512.61/x
  3. Step 3: Cross multiply
    11,817.80x = 16,309.28 × 6,512.61
  4. Step 4: Simplify right side
    11,817.80x = 106,215,980.02
  5. Step 5: Solve for x
    x = 106,215,980.02/11,817.80
  6. Step 6: Final answer
    x = 8,987.80

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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.