Home / 13,517.35-20,256.58-7,661.59

Finding the Fourth Proportional to 13,517.35, 20,256.58 and 7,661.59

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Solution

The fourth proportional to 13,517.35, 20,256.58 and 7,661.59 is: 11,481.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.35 : 20,256.58 = 7,661.59 : x
  2. Step 2: Convert to fraction form
    13,517.35/20,256.58 = 7,661.59/x
  3. Step 3: Cross multiply
    13,517.35x = 20,256.58 × 7,661.59
  4. Step 4: Simplify right side
    13,517.35x = 155,197,569.70
  5. Step 5: Solve for x
    x = 155,197,569.70/13,517.35
  6. Step 6: Final answer
    x = 11,481.36

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1.5x scale

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.