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Finding the Fourth Proportional to 11,199.60, 16,812.20 and 6,585.20

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Solution

The fourth proportional to 11,199.60, 16,812.20 and 6,585.20 is: 9,885.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,199.60 : 16,812.20 = 6,585.20 : x
  2. Step 2: Convert to fraction form
    11,199.60/16,812.20 = 6,585.20/x
  3. Step 3: Cross multiply
    11,199.60x = 16,812.20 × 6,585.20
  4. Step 4: Simplify right side
    11,199.60x = 110,711,699.44
  5. Step 5: Solve for x
    x = 110,711,699.44/11,199.60
  6. Step 6: Final answer
    x = 9,885.33

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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.