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Finding the Fourth Proportional to 13,480.56, 20,211.12 and 4,713.12

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Solution

The fourth proportional to 13,480.56, 20,211.12 and 4,713.12 is: 7,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.56 : 20,211.12 = 4,713.12 : x
  2. Step 2: Convert to fraction form
    13,480.56/20,211.12 = 4,713.12/x
  3. Step 3: Cross multiply
    13,480.56x = 20,211.12 × 4,713.12
  4. Step 4: Simplify right side
    13,480.56x = 95,257,433.89
  5. Step 5: Solve for x
    x = 95,257,433.89/13,480.56
  6. Step 6: Final answer
    x = 7,066.28

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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.