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Finding the Fourth Proportional to 13,503.56, 20,255.22 and 4,269.56

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Solution

The fourth proportional to 13,503.56, 20,255.22 and 4,269.56 is: 6,404.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.56 : 20,255.22 = 4,269.56 : x
  2. Step 2: Convert to fraction form
    13,503.56/20,255.22 = 4,269.56/x
  3. Step 3: Cross multiply
    13,503.56x = 20,255.22 × 4,269.56
  4. Step 4: Simplify right side
    13,503.56x = 86,480,877.10
  5. Step 5: Solve for x
    x = 86,480,877.10/13,503.56
  6. Step 6: Final answer
    x = 6,404.30

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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.