Home / 10,855.44-14,980.84-6,139.62

Finding the Fourth Proportional to 10,855.44, 14,980.84 and 6,139.62

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Solution

The fourth proportional to 10,855.44, 14,980.84 and 6,139.62 is: 8,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.44 : 14,980.84 = 6,139.62 : x
  2. Step 2: Convert to fraction form
    10,855.44/14,980.84 = 6,139.62/x
  3. Step 3: Cross multiply
    10,855.44x = 14,980.84 × 6,139.62
  4. Step 4: Simplify right side
    10,855.44x = 91,976,664.88
  5. Step 5: Solve for x
    x = 91,976,664.88/10,855.44
  6. Step 6: Final answer
    x = 8,472.86

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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.