Home / 13,759.55-18,988.26-7,791.77

Finding the Fourth Proportional to 13,759.55, 18,988.26 and 7,791.77

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Solution

The fourth proportional to 13,759.55, 18,988.26 and 7,791.77 is: 10,752.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.55 : 18,988.26 = 7,791.77 : x
  2. Step 2: Convert to fraction form
    13,759.55/18,988.26 = 7,791.77/x
  3. Step 3: Cross multiply
    13,759.55x = 18,988.26 × 7,791.77
  4. Step 4: Simplify right side
    13,759.55x = 147,952,172.87
  5. Step 5: Solve for x
    x = 147,952,172.87/13,759.55
  6. Step 6: Final answer
    x = 10,752.69

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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.