Home / 13,759.04-18,987.54-7,791.87

Finding the Fourth Proportional to 13,759.04, 18,987.54 and 7,791.87

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Solution

The fourth proportional to 13,759.04, 18,987.54 and 7,791.87 is: 10,752.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.04 : 18,987.54 = 7,791.87 : x
  2. Step 2: Convert to fraction form
    13,759.04/18,987.54 = 7,791.87/x
  3. Step 3: Cross multiply
    13,759.04x = 18,987.54 × 7,791.87
  4. Step 4: Simplify right side
    13,759.04x = 147,948,443.30
  5. Step 5: Solve for x
    x = 147,948,443.30/13,759.04
  6. Step 6: Final answer
    x = 10,752.82

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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.