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Finding the Fourth Proportional to 18,199.96, 27,295.02 and 7,809.28

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Solution

The fourth proportional to 18,199.96, 27,295.02 and 7,809.28 is: 11,711.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,199.96 : 27,295.02 = 7,809.28 : x
  2. Step 2: Convert to fraction form
    18,199.96/27,295.02 = 7,809.28/x
  3. Step 3: Cross multiply
    18,199.96x = 27,295.02 × 7,809.28
  4. Step 4: Simplify right side
    18,199.96x = 213,154,453.79
  5. Step 5: Solve for x
    x = 213,154,453.79/18,199.96
  6. Step 6: Final answer
    x = 11,711.81

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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.