Home / 13,684.55-20,508.25-7,758.64

Finding the Fourth Proportional to 13,684.55, 20,508.25 and 7,758.64

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Solution

The fourth proportional to 13,684.55, 20,508.25 and 7,758.64 is: 11,627.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.55 : 20,508.25 = 7,758.64 : x
  2. Step 2: Convert to fraction form
    13,684.55/20,508.25 = 7,758.64/x
  3. Step 3: Cross multiply
    13,684.55x = 20,508.25 × 7,758.64
  4. Step 4: Simplify right side
    13,684.55x = 159,116,110.01
  5. Step 5: Solve for x
    x = 159,116,110.01/13,684.55
  6. Step 6: Final answer
    x = 11,627.42

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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.