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Finding the Fourth Proportional to 13,300.60, 19,922.10 and 8,116.60

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Solution

The fourth proportional to 13,300.60, 19,922.10 and 8,116.60 is: 12,157.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,300.60 : 19,922.10 = 8,116.60 : x
  2. Step 2: Convert to fraction form
    13,300.60/19,922.10 = 8,116.60/x
  3. Step 3: Cross multiply
    13,300.60x = 19,922.10 × 8,116.60
  4. Step 4: Simplify right side
    13,300.60x = 161,699,716.86
  5. Step 5: Solve for x
    x = 161,699,716.86/13,300.60
  6. Step 6: Final answer
    x = 12,157.32

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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.