Home / 13,213.60-18,234.72-7,245.11

Finding the Fourth Proportional to 13,213.60, 18,234.72 and 7,245.11

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Solution

The fourth proportional to 13,213.60, 18,234.72 and 7,245.11 is: 9,998.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.60 : 18,234.72 = 7,245.11 : x
  2. Step 2: Convert to fraction form
    13,213.60/18,234.72 = 7,245.11/x
  3. Step 3: Cross multiply
    13,213.60x = 18,234.72 × 7,245.11
  4. Step 4: Simplify right side
    13,213.60x = 132,112,597.81
  5. Step 5: Solve for x
    x = 132,112,597.81/13,213.60
  6. Step 6: Final answer
    x = 9,998.23

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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.