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Finding the Fourth Proportional to 18,331.99, 27,489.88 and 7,801.59

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Solution

The fourth proportional to 18,331.99, 27,489.88 and 7,801.59 is: 11,698.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.99 : 27,489.88 = 7,801.59 : x
  2. Step 2: Convert to fraction form
    18,331.99/27,489.88 = 7,801.59/x
  3. Step 3: Cross multiply
    18,331.99x = 27,489.88 × 7,801.59
  4. Step 4: Simplify right side
    18,331.99x = 214,464,772.91
  5. Step 5: Solve for x
    x = 214,464,772.91/18,331.99
  6. Step 6: Final answer
    x = 11,698.94

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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.