Home / 13,759.34-18,988.22-7,791.05

Finding the Fourth Proportional to 13,759.34, 18,988.22 and 7,791.05

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Solution

The fourth proportional to 13,759.34, 18,988.22 and 7,791.05 is: 10,751.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.34 : 18,988.22 = 7,791.05 : x
  2. Step 2: Convert to fraction form
    13,759.34/18,988.22 = 7,791.05/x
  3. Step 3: Cross multiply
    13,759.34x = 18,988.22 × 7,791.05
  4. Step 4: Simplify right side
    13,759.34x = 147,938,238.38
  5. Step 5: Solve for x
    x = 147,938,238.38/13,759.34
  6. Step 6: Final answer
    x = 10,751.85

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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.