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Finding the Fourth Proportional to 18,313.44, 25,272.56 and 9,930

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Solution

The fourth proportional to 18,313.44, 25,272.56 and 9,930 is: 13,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.44 : 25,272.56 = 9,930 : x
  2. Step 2: Convert to fraction form
    18,313.44/25,272.56 = 9,930/x
  3. Step 3: Cross multiply
    18,313.44x = 25,272.56 × 9,930
  4. Step 4: Simplify right side
    18,313.44x = 250,956,520.80
  5. Step 5: Solve for x
    x = 250,956,520.80/18,313.44
  6. Step 6: Final answer
    x = 13,703.41

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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.