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Finding the Fourth Proportional to 15,073.85, 20,801.96 and 8,360.09

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Solution

The fourth proportional to 15,073.85, 20,801.96 and 8,360.09 is: 11,536.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,073.85 : 20,801.96 = 8,360.09 : x
  2. Step 2: Convert to fraction form
    15,073.85/20,801.96 = 8,360.09/x
  3. Step 3: Cross multiply
    15,073.85x = 20,801.96 × 8,360.09
  4. Step 4: Simplify right side
    15,073.85x = 173,906,385.36
  5. Step 5: Solve for x
    x = 173,906,385.36/15,073.85
  6. Step 6: Final answer
    x = 11,536.96

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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.