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Finding the Fourth Proportional to 13,459.50, 20,201.49 and 6,890.22

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Solution

The fourth proportional to 13,459.50, 20,201.49 and 6,890.22 is: 10,341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.50 : 20,201.49 = 6,890.22 : x
  2. Step 2: Convert to fraction form
    13,459.50/20,201.49 = 6,890.22/x
  3. Step 3: Cross multiply
    13,459.50x = 20,201.49 × 6,890.22
  4. Step 4: Simplify right side
    13,459.50x = 139,192,710.43
  5. Step 5: Solve for x
    x = 139,192,710.43/13,459.50
  6. Step 6: Final answer
    x = 10,341.60

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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.