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Finding the Fourth Proportional to 13,672.67, 20,507.98 and 4,312.99

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Solution

The fourth proportional to 13,672.67, 20,507.98 and 4,312.99 is: 6,469.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.67 : 20,507.98 = 4,312.99 : x
  2. Step 2: Convert to fraction form
    13,672.67/20,507.98 = 4,312.99/x
  3. Step 3: Cross multiply
    13,672.67x = 20,507.98 × 4,312.99
  4. Step 4: Simplify right side
    13,672.67x = 88,450,691.10
  5. Step 5: Solve for x
    x = 88,450,691.10/13,672.67
  6. Step 6: Final answer
    x = 6,469.16

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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.