Home / 17,815.36-26,736-7,965.76

Finding the Fourth Proportional to 17,815.36, 26,736 and 7,965.76

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Solution

The fourth proportional to 17,815.36, 26,736 and 7,965.76 is: 11,954.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,815.36 : 26,736 = 7,965.76 : x
  2. Step 2: Convert to fraction form
    17,815.36/26,736 = 7,965.76/x
  3. Step 3: Cross multiply
    17,815.36x = 26,736 × 7,965.76
  4. Step 4: Simplify right side
    17,815.36x = 212,972,559.36
  5. Step 5: Solve for x
    x = 212,972,559.36/17,815.36
  6. Step 6: Final answer
    x = 11,954.43

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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.