Home / 10,814.98-16,221.07-3,420.19

Finding the Fourth Proportional to 10,814.98, 16,221.07 and 3,420.19

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Solution

The fourth proportional to 10,814.98, 16,221.07 and 3,420.19 is: 5,129.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,814.98 : 16,221.07 = 3,420.19 : x
  2. Step 2: Convert to fraction form
    10,814.98/16,221.07 = 3,420.19/x
  3. Step 3: Cross multiply
    10,814.98x = 16,221.07 × 3,420.19
  4. Step 4: Simplify right side
    10,814.98x = 55,479,141.40
  5. Step 5: Solve for x
    x = 55,479,141.40/10,814.98
  6. Step 6: Final answer
    x = 5,129.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.