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Finding the Fourth Proportional to 18,342.32, 27,513.48 and 4,491.32

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Solution

The fourth proportional to 18,342.32, 27,513.48 and 4,491.32 is: 6,736.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.32 : 27,513.48 = 4,491.32 : x
  2. Step 2: Convert to fraction form
    18,342.32/27,513.48 = 4,491.32/x
  3. Step 3: Cross multiply
    18,342.32x = 27,513.48 × 4,491.32
  4. Step 4: Simplify right side
    18,342.32x = 123,571,842.99
  5. Step 5: Solve for x
    x = 123,571,842.99/18,342.32
  6. Step 6: Final answer
    x = 6,736.98

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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.