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Finding the Fourth Proportional to 13,601.40, 20,402.10 and 11,297.40

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Solution

The fourth proportional to 13,601.40, 20,402.10 and 11,297.40 is: 16,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.40 : 20,402.10 = 11,297.40 : x
  2. Step 2: Convert to fraction form
    13,601.40/20,402.10 = 11,297.40/x
  3. Step 3: Cross multiply
    13,601.40x = 20,402.10 × 11,297.40
  4. Step 4: Simplify right side
    13,601.40x = 230,490,684.54
  5. Step 5: Solve for x
    x = 230,490,684.54/13,601.40
  6. Step 6: Final answer
    x = 16,946.10

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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.