Home / 13,759.36-18,987.55-7,791.59

Finding the Fourth Proportional to 13,759.36, 18,987.55 and 7,791.59

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Solution

The fourth proportional to 13,759.36, 18,987.55 and 7,791.59 is: 10,752.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.36 : 18,987.55 = 7,791.59 : x
  2. Step 2: Convert to fraction form
    13,759.36/18,987.55 = 7,791.59/x
  3. Step 3: Cross multiply
    13,759.36x = 18,987.55 × 7,791.59
  4. Step 4: Simplify right side
    13,759.36x = 147,943,232.69
  5. Step 5: Solve for x
    x = 147,943,232.69/13,759.36
  6. Step 6: Final answer
    x = 10,752.19

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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.