Home / 13,204.27-18,222.87-8,720.20

Finding the Fourth Proportional to 13,204.27, 18,222.87 and 8,720.20

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Solution

The fourth proportional to 13,204.27, 18,222.87 and 8,720.20 is: 12,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.27 : 18,222.87 = 8,720.20 : x
  2. Step 2: Convert to fraction form
    13,204.27/18,222.87 = 8,720.20/x
  3. Step 3: Cross multiply
    13,204.27x = 18,222.87 × 8,720.20
  4. Step 4: Simplify right side
    13,204.27x = 158,907,070.97
  5. Step 5: Solve for x
    x = 158,907,070.97/13,204.27
  6. Step 6: Final answer
    x = 12,034.52

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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.