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Finding the Fourth Proportional to 18,338.81, 27,509.42 and 5,859.34

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Solution

The fourth proportional to 18,338.81, 27,509.42 and 5,859.34 is: 8,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.81 : 27,509.42 = 5,859.34 : x
  2. Step 2: Convert to fraction form
    18,338.81/27,509.42 = 5,859.34/x
  3. Step 3: Cross multiply
    18,338.81x = 27,509.42 × 5,859.34
  4. Step 4: Simplify right side
    18,338.81x = 161,186,990.86
  5. Step 5: Solve for x
    x = 161,186,990.86/18,338.81
  6. Step 6: Final answer
    x = 8,789.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.