Home / 12,708.75-19,075.29-5,311.26

Finding the Fourth Proportional to 12,708.75, 19,075.29 and 5,311.26

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Solution

The fourth proportional to 12,708.75, 19,075.29 and 5,311.26 is: 7,971.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.75 : 19,075.29 = 5,311.26 : x
  2. Step 2: Convert to fraction form
    12,708.75/19,075.29 = 5,311.26/x
  3. Step 3: Cross multiply
    12,708.75x = 19,075.29 × 5,311.26
  4. Step 4: Simplify right side
    12,708.75x = 101,313,824.77
  5. Step 5: Solve for x
    x = 101,313,824.77/12,708.75
  6. Step 6: Final answer
    x = 7,971.97

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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.