Home / 13,839.89-20,759.82-5,075.51

Finding the Fourth Proportional to 13,839.89, 20,759.82 and 5,075.51

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Solution

The fourth proportional to 13,839.89, 20,759.82 and 5,075.51 is: 7,613.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.89 : 20,759.82 = 5,075.51 : x
  2. Step 2: Convert to fraction form
    13,839.89/20,759.82 = 5,075.51/x
  3. Step 3: Cross multiply
    13,839.89x = 20,759.82 × 5,075.51
  4. Step 4: Simplify right side
    13,839.89x = 105,366,674.01
  5. Step 5: Solve for x
    x = 105,366,674.01/13,839.89
  6. Step 6: Final answer
    x = 7,613.26

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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.