Home / 13,580.76-20,361.42-5,785.32

Finding the Fourth Proportional to 13,580.76, 20,361.42 and 5,785.32

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Solution

The fourth proportional to 13,580.76, 20,361.42 and 5,785.32 is: 8,673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.76 : 20,361.42 = 5,785.32 : x
  2. Step 2: Convert to fraction form
    13,580.76/20,361.42 = 5,785.32/x
  3. Step 3: Cross multiply
    13,580.76x = 20,361.42 × 5,785.32
  4. Step 4: Simplify right side
    13,580.76x = 117,797,330.35
  5. Step 5: Solve for x
    x = 117,797,330.35/13,580.76
  6. Step 6: Final answer
    x = 8,673.84

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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.