Home / 13,200.21-18,212.67-8,487.23

Finding the Fourth Proportional to 13,200.21, 18,212.67 and 8,487.23

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Solution

The fourth proportional to 13,200.21, 18,212.67 and 8,487.23 is: 11,710.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.21 : 18,212.67 = 8,487.23 : x
  2. Step 2: Convert to fraction form
    13,200.21/18,212.67 = 8,487.23/x
  3. Step 3: Cross multiply
    13,200.21x = 18,212.67 × 8,487.23
  4. Step 4: Simplify right side
    13,200.21x = 154,575,028.14
  5. Step 5: Solve for x
    x = 154,575,028.14/13,200.21
  6. Step 6: Final answer
    x = 11,710.04

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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.