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Finding the Fourth Proportional to 13,654.54, 18,838.20 and 8,941.42

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Solution

The fourth proportional to 13,654.54, 18,838.20 and 8,941.42 is: 12,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.54 : 18,838.20 = 8,941.42 : x
  2. Step 2: Convert to fraction form
    13,654.54/18,838.20 = 8,941.42/x
  3. Step 3: Cross multiply
    13,654.54x = 18,838.20 × 8,941.42
  4. Step 4: Simplify right side
    13,654.54x = 168,440,258.24
  5. Step 5: Solve for x
    x = 168,440,258.24/13,654.54
  6. Step 6: Final answer
    x = 12,335.84

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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.