Home / 13,166.82-18,165.60-7,859.70

Finding the Fourth Proportional to 13,166.82, 18,165.60 and 7,859.70

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Solution

The fourth proportional to 13,166.82, 18,165.60 and 7,859.70 is: 10,843.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.82 : 18,165.60 = 7,859.70 : x
  2. Step 2: Convert to fraction form
    13,166.82/18,165.60 = 7,859.70/x
  3. Step 3: Cross multiply
    13,166.82x = 18,165.60 × 7,859.70
  4. Step 4: Simplify right side
    13,166.82x = 142,776,166.32
  5. Step 5: Solve for x
    x = 142,776,166.32/13,166.82
  6. Step 6: Final answer
    x = 10,843.63

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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.