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Finding the Fourth Proportional to 18,357.32, 25,333.10 and 10,905.32

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Solution

The fourth proportional to 18,357.32, 25,333.10 and 10,905.32 is: 15,049.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.32 : 25,333.10 = 10,905.32 : x
  2. Step 2: Convert to fraction form
    18,357.32/25,333.10 = 10,905.32/x
  3. Step 3: Cross multiply
    18,357.32x = 25,333.10 × 10,905.32
  4. Step 4: Simplify right side
    18,357.32x = 276,265,380.90
  5. Step 5: Solve for x
    x = 276,265,380.90/18,357.32
  6. Step 6: Final answer
    x = 15,049.33

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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.