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Finding the Fourth Proportional to 12,585.64, 18,883.05 and 6,662.85

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Solution

The fourth proportional to 12,585.64, 18,883.05 and 6,662.85 is: 9,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.64 : 18,883.05 = 6,662.85 : x
  2. Step 2: Convert to fraction form
    12,585.64/18,883.05 = 6,662.85/x
  3. Step 3: Cross multiply
    12,585.64x = 18,883.05 × 6,662.85
  4. Step 4: Simplify right side
    12,585.64x = 125,814,929.69
  5. Step 5: Solve for x
    x = 125,814,929.69/12,585.64
  6. Step 6: Final answer
    x = 9,996.70

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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.