Home / 10,821.60-14,933.16-6,105.78

Finding the Fourth Proportional to 10,821.60, 14,933.16 and 6,105.78

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Solution

The fourth proportional to 10,821.60, 14,933.16 and 6,105.78 is: 8,425.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.60 : 14,933.16 = 6,105.78 : x
  2. Step 2: Convert to fraction form
    10,821.60/14,933.16 = 6,105.78/x
  3. Step 3: Cross multiply
    10,821.60x = 14,933.16 × 6,105.78
  4. Step 4: Simplify right side
    10,821.60x = 91,178,589.66
  5. Step 5: Solve for x
    x = 91,178,589.66/10,821.60
  6. Step 6: Final answer
    x = 8,425.61

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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.