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Finding the Fourth Proportional to 12,994.83, 17,920.85 and 9,751.66

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Solution

The fourth proportional to 12,994.83, 17,920.85 and 9,751.66 is: 13,448.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,994.83 : 17,920.85 = 9,751.66 : x
  2. Step 2: Convert to fraction form
    12,994.83/17,920.85 = 9,751.66/x
  3. Step 3: Cross multiply
    12,994.83x = 17,920.85 × 9,751.66
  4. Step 4: Simplify right side
    12,994.83x = 174,757,942.55
  5. Step 5: Solve for x
    x = 174,757,942.55/12,994.83
  6. Step 6: Final answer
    x = 13,448.27

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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.