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Finding the Fourth Proportional to 13,456.60, 20,163.30 and 11,253.40

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Solution

The fourth proportional to 13,456.60, 20,163.30 and 11,253.40 is: 16,862.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,456.60 : 20,163.30 = 11,253.40 : x
  2. Step 2: Convert to fraction form
    13,456.60/20,163.30 = 11,253.40/x
  3. Step 3: Cross multiply
    13,456.60x = 20,163.30 × 11,253.40
  4. Step 4: Simplify right side
    13,456.60x = 226,905,680.22
  5. Step 5: Solve for x
    x = 226,905,680.22/13,456.60
  6. Step 6: Final answer
    x = 16,862.04

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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.