Home / 13,656.75-20,485.28-5,760.60

Finding the Fourth Proportional to 13,656.75, 20,485.28 and 5,760.60

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Solution

The fourth proportional to 13,656.75, 20,485.28 and 5,760.60 is: 8,640.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.75 : 20,485.28 = 5,760.60 : x
  2. Step 2: Convert to fraction form
    13,656.75/20,485.28 = 5,760.60/x
  3. Step 3: Cross multiply
    13,656.75x = 20,485.28 × 5,760.60
  4. Step 4: Simplify right side
    13,656.75x = 118,007,372.74
  5. Step 5: Solve for x
    x = 118,007,372.74/13,656.75
  6. Step 6: Final answer
    x = 8,640.96

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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.