Home / 12,225.19-18,321.21-5,553.37

Finding the Fourth Proportional to 12,225.19, 18,321.21 and 5,553.37

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Solution

The fourth proportional to 12,225.19, 18,321.21 and 5,553.37 is: 8,322.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.19 : 18,321.21 = 5,553.37 : x
  2. Step 2: Convert to fraction form
    12,225.19/18,321.21 = 5,553.37/x
  3. Step 3: Cross multiply
    12,225.19x = 18,321.21 × 5,553.37
  4. Step 4: Simplify right side
    12,225.19x = 101,744,457.98
  5. Step 5: Solve for x
    x = 101,744,457.98/12,225.19
  6. Step 6: Final answer
    x = 8,322.53

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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.