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Finding the Fourth Proportional to 13,469.99, 20,209.10 and 6,900.83

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Solution

The fourth proportional to 13,469.99, 20,209.10 and 6,900.83 is: 10,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,469.99 : 20,209.10 = 6,900.83 : x
  2. Step 2: Convert to fraction form
    13,469.99/20,209.10 = 6,900.83/x
  3. Step 3: Cross multiply
    13,469.99x = 20,209.10 × 6,900.83
  4. Step 4: Simplify right side
    13,469.99x = 139,459,428.00
  5. Step 5: Solve for x
    x = 139,459,428.00/13,469.99
  6. Step 6: Final answer
    x = 10,353.35

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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.