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Finding the Fourth Proportional to 17,272.81, 25,905.24 and 8,387.80

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Solution

The fourth proportional to 17,272.81, 25,905.24 and 8,387.80 is: 12,579.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,272.81 : 25,905.24 = 8,387.80 : x
  2. Step 2: Convert to fraction form
    17,272.81/25,905.24 = 8,387.80/x
  3. Step 3: Cross multiply
    17,272.81x = 25,905.24 × 8,387.80
  4. Step 4: Simplify right side
    17,272.81x = 217,287,972.07
  5. Step 5: Solve for x
    x = 217,287,972.07/17,272.81
  6. Step 6: Final answer
    x = 12,579.77

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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.