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Finding the Fourth Proportional to 17,919.80, 26,847.30 and 15,327.80

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Solution

The fourth proportional to 17,919.80, 26,847.30 and 15,327.80 is: 22,963.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,919.80 : 26,847.30 = 15,327.80 : x
  2. Step 2: Convert to fraction form
    17,919.80/26,847.30 = 15,327.80/x
  3. Step 3: Cross multiply
    17,919.80x = 26,847.30 × 15,327.80
  4. Step 4: Simplify right side
    17,919.80x = 411,510,044.94
  5. Step 5: Solve for x
    x = 411,510,044.94/17,919.80
  6. Step 6: Final answer
    x = 22,963.99

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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.