Home / 18,310.30-25,270.07-11,140.72

Finding the Fourth Proportional to 18,310.30, 25,270.07 and 11,140.72

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Solution

The fourth proportional to 18,310.30, 25,270.07 and 11,140.72 is: 15,375.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.30 : 25,270.07 = 11,140.72 : x
  2. Step 2: Convert to fraction form
    18,310.30/25,270.07 = 11,140.72/x
  3. Step 3: Cross multiply
    18,310.30x = 25,270.07 × 11,140.72
  4. Step 4: Simplify right side
    18,310.30x = 281,526,655.37
  5. Step 5: Solve for x
    x = 281,526,655.37/18,310.30
  6. Step 6: Final answer
    x = 15,375.32

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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.