Home / 10,855.28-14,982.90-6,379.22

Finding the Fourth Proportional to 10,855.28, 14,982.90 and 6,379.22

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Solution

The fourth proportional to 10,855.28, 14,982.90 and 6,379.22 is: 8,804.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.28 : 14,982.90 = 6,379.22 : x
  2. Step 2: Convert to fraction form
    10,855.28/14,982.90 = 6,379.22/x
  3. Step 3: Cross multiply
    10,855.28x = 14,982.90 × 6,379.22
  4. Step 4: Simplify right side
    10,855.28x = 95,579,215.34
  5. Step 5: Solve for x
    x = 95,579,215.34/10,855.28
  6. Step 6: Final answer
    x = 8,804.86

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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.