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Finding the Fourth Proportional to 18,843.10, 25,999.50 and 10,883.20

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Solution

The fourth proportional to 18,843.10, 25,999.50 and 10,883.20 is: 15,016.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.10 : 25,999.50 = 10,883.20 : x
  2. Step 2: Convert to fraction form
    18,843.10/25,999.50 = 10,883.20/x
  3. Step 3: Cross multiply
    18,843.10x = 25,999.50 × 10,883.20
  4. Step 4: Simplify right side
    18,843.10x = 282,957,758.40
  5. Step 5: Solve for x
    x = 282,957,758.40/18,843.10
  6. Step 6: Final answer
    x = 15,016.52

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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.