Home / 13,480.56-20,221.34-6,899.04

Finding the Fourth Proportional to 13,480.56, 20,221.34 and 6,899.04

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Solution

The fourth proportional to 13,480.56, 20,221.34 and 6,899.04 is: 10,348.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.56 : 20,221.34 = 6,899.04 : x
  2. Step 2: Convert to fraction form
    13,480.56/20,221.34 = 6,899.04/x
  3. Step 3: Cross multiply
    13,480.56x = 20,221.34 × 6,899.04
  4. Step 4: Simplify right side
    13,480.56x = 139,507,799.02
  5. Step 5: Solve for x
    x = 139,507,799.02/13,480.56
  6. Step 6: Final answer
    x = 10,348.81

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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.