Home / 13,759.65-18,988.97-7,791.19

Finding the Fourth Proportional to 13,759.65, 18,988.97 and 7,791.19

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Solution

The fourth proportional to 13,759.65, 18,988.97 and 7,791.19 is: 10,752.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.65 : 18,988.97 = 7,791.19 : x
  2. Step 2: Convert to fraction form
    13,759.65/18,988.97 = 7,791.19/x
  3. Step 3: Cross multiply
    13,759.65x = 18,988.97 × 7,791.19
  4. Step 4: Simplify right side
    13,759.65x = 147,946,619.62
  5. Step 5: Solve for x
    x = 147,946,619.62/13,759.65
  6. Step 6: Final answer
    x = 10,752.21

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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.