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Finding the Fourth Proportional to 13,498.64, 20,245.42 and 10,881.43

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Solution

The fourth proportional to 13,498.64, 20,245.42 and 10,881.43 is: 16,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.64 : 20,245.42 = 10,881.43 : x
  2. Step 2: Convert to fraction form
    13,498.64/20,245.42 = 10,881.43/x
  3. Step 3: Cross multiply
    13,498.64x = 20,245.42 × 10,881.43
  4. Step 4: Simplify right side
    13,498.64x = 220,299,120.55
  5. Step 5: Solve for x
    x = 220,299,120.55/13,498.64
  6. Step 6: Final answer
    x = 16,320.10

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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.