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Finding the Fourth Proportional to 13,566.60, 20,321.10 and 11,262.60

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Solution

The fourth proportional to 13,566.60, 20,321.10 and 11,262.60 is: 16,869.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,566.60 : 20,321.10 = 11,262.60 : x
  2. Step 2: Convert to fraction form
    13,566.60/20,321.10 = 11,262.60/x
  3. Step 3: Cross multiply
    13,566.60x = 20,321.10 × 11,262.60
  4. Step 4: Simplify right side
    13,566.60x = 228,868,420.86
  5. Step 5: Solve for x
    x = 228,868,420.86/13,566.60
  6. Step 6: Final answer
    x = 16,869.99

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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.