Home / 13,203.12-18,220.30-7,234.88

Finding the Fourth Proportional to 13,203.12, 18,220.30 and 7,234.88

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Solution

The fourth proportional to 13,203.12, 18,220.30 and 7,234.88 is: 9,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.12 : 18,220.30 = 7,234.88 : x
  2. Step 2: Convert to fraction form
    13,203.12/18,220.30 = 7,234.88/x
  3. Step 3: Cross multiply
    13,203.12x = 18,220.30 × 7,234.88
  4. Step 4: Simplify right side
    13,203.12x = 131,821,684.06
  5. Step 5: Solve for x
    x = 131,821,684.06/13,203.12
  6. Step 6: Final answer
    x = 9,984.13

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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.