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Finding the Fourth Proportional to 13,461.21, 20,195.01 and 4,227.21

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Solution

The fourth proportional to 13,461.21, 20,195.01 and 4,227.21 is: 6,341.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.21 : 20,195.01 = 4,227.21 : x
  2. Step 2: Convert to fraction form
    13,461.21/20,195.01 = 4,227.21/x
  3. Step 3: Cross multiply
    13,461.21x = 20,195.01 × 4,227.21
  4. Step 4: Simplify right side
    13,461.21x = 85,368,548.22
  5. Step 5: Solve for x
    x = 85,368,548.22/13,461.21
  6. Step 6: Final answer
    x = 6,341.82

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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.