Home / 13,421.82-20,136.36-9,550.80

Finding the Fourth Proportional to 13,421.82, 20,136.36 and 9,550.80

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Solution

The fourth proportional to 13,421.82, 20,136.36 and 9,550.80 is: 14,328.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.82 : 20,136.36 = 9,550.80 : x
  2. Step 2: Convert to fraction form
    13,421.82/20,136.36 = 9,550.80/x
  3. Step 3: Cross multiply
    13,421.82x = 20,136.36 × 9,550.80
  4. Step 4: Simplify right side
    13,421.82x = 192,318,347.09
  5. Step 5: Solve for x
    x = 192,318,347.09/13,421.82
  6. Step 6: Final answer
    x = 14,328.78

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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.