Home / 13,534.26-20,272.59-7,687.86

Finding the Fourth Proportional to 13,534.26, 20,272.59 and 7,687.86

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Solution

The fourth proportional to 13,534.26, 20,272.59 and 7,687.86 is: 11,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,534.26 : 20,272.59 = 7,687.86 : x
  2. Step 2: Convert to fraction form
    13,534.26/20,272.59 = 7,687.86/x
  3. Step 3: Cross multiply
    13,534.26x = 20,272.59 × 7,687.86
  4. Step 4: Simplify right side
    13,534.26x = 155,852,833.76
  5. Step 5: Solve for x
    x = 155,852,833.76/13,534.26
  6. Step 6: Final answer
    x = 11,515.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.