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Finding the Fourth Proportional to 14,987.25, 20,682.41 and 8,363.25

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Solution

The fourth proportional to 14,987.25, 20,682.41 and 8,363.25 is: 11,541.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.25 : 20,682.41 = 8,363.25 : x
  2. Step 2: Convert to fraction form
    14,987.25/20,682.41 = 8,363.25/x
  3. Step 3: Cross multiply
    14,987.25x = 20,682.41 × 8,363.25
  4. Step 4: Simplify right side
    14,987.25x = 172,972,123.62
  5. Step 5: Solve for x
    x = 172,972,123.62/14,987.25
  6. Step 6: Final answer
    x = 11,541.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.