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Finding the Fourth Proportional to 14,812.90, 20,442.05 and 8,845.09

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Solution

The fourth proportional to 14,812.90, 20,442.05 and 8,845.09 is: 12,206.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,812.90 : 20,442.05 = 8,845.09 : x
  2. Step 2: Convert to fraction form
    14,812.90/20,442.05 = 8,845.09/x
  3. Step 3: Cross multiply
    14,812.90x = 20,442.05 × 8,845.09
  4. Step 4: Simplify right side
    14,812.90x = 180,811,772.03
  5. Step 5: Solve for x
    x = 180,811,772.03/14,812.90
  6. Step 6: Final answer
    x = 12,206.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.