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Finding the Fourth Proportional to 12,059.46, 18,171.33 and 9,916.20

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Solution

The fourth proportional to 12,059.46, 18,171.33 and 9,916.20 is: 14,941.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,059.46 : 18,171.33 = 9,916.20 : x
  2. Step 2: Convert to fraction form
    12,059.46/18,171.33 = 9,916.20/x
  3. Step 3: Cross multiply
    12,059.46x = 18,171.33 × 9,916.20
  4. Step 4: Simplify right side
    12,059.46x = 180,190,542.55
  5. Step 5: Solve for x
    x = 180,190,542.55/12,059.46
  6. Step 6: Final answer
    x = 14,941.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.