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Finding the Fourth Proportional to 13,734.40, 20,601.60 and 12,276.40

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Solution

The fourth proportional to 13,734.40, 20,601.60 and 12,276.40 is: 18,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.40 : 20,601.60 = 12,276.40 : x
  2. Step 2: Convert to fraction form
    13,734.40/20,601.60 = 12,276.40/x
  3. Step 3: Cross multiply
    13,734.40x = 20,601.60 × 12,276.40
  4. Step 4: Simplify right side
    13,734.40x = 252,913,482.24
  5. Step 5: Solve for x
    x = 252,913,482.24/13,734.40
  6. Step 6: Final answer
    x = 18,414.60

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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.