Home / 18,245.07-25,178.19-9,861.57

Finding the Fourth Proportional to 18,245.07, 25,178.19 and 9,861.57

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Solution

The fourth proportional to 18,245.07, 25,178.19 and 9,861.57 is: 13,608.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.07 : 25,178.19 = 9,861.57 : x
  2. Step 2: Convert to fraction form
    18,245.07/25,178.19 = 9,861.57/x
  3. Step 3: Cross multiply
    18,245.07x = 25,178.19 × 9,861.57
  4. Step 4: Simplify right side
    18,245.07x = 248,296,446.18
  5. Step 5: Solve for x
    x = 248,296,446.18/18,245.07
  6. Step 6: Final answer
    x = 13,608.96

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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.