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Finding the Fourth Proportional to 11,850.79, 17,763.55 and 8,920.03

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Solution

The fourth proportional to 11,850.79, 17,763.55 and 8,920.03 is: 13,370.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,850.79 : 17,763.55 = 8,920.03 : x
  2. Step 2: Convert to fraction form
    11,850.79/17,763.55 = 8,920.03/x
  3. Step 3: Cross multiply
    11,850.79x = 17,763.55 × 8,920.03
  4. Step 4: Simplify right side
    11,850.79x = 158,451,398.91
  5. Step 5: Solve for x
    x = 158,451,398.91/11,850.79
  6. Step 6: Final answer
    x = 13,370.53

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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.