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Finding the Fourth Proportional to 9,894.39, 13,645.04 and 8,910.24

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Solution

The fourth proportional to 9,894.39, 13,645.04 and 8,910.24 is: 12,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,894.39 : 13,645.04 = 8,910.24 : x
  2. Step 2: Convert to fraction form
    9,894.39/13,645.04 = 8,910.24/x
  3. Step 3: Cross multiply
    9,894.39x = 13,645.04 × 8,910.24
  4. Step 4: Simplify right side
    9,894.39x = 121,580,536.66
  5. Step 5: Solve for x
    x = 121,580,536.66/9,894.39
  6. Step 6: Final answer
    x = 12,287.83

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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.