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Finding the Fourth Proportional to 13,846.20, 20,720.70 and 9,472.20

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Solution

The fourth proportional to 13,846.20, 20,720.70 and 9,472.20 is: 14,175.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,846.20 : 20,720.70 = 9,472.20 : x
  2. Step 2: Convert to fraction form
    13,846.20/20,720.70 = 9,472.20/x
  3. Step 3: Cross multiply
    13,846.20x = 20,720.70 × 9,472.20
  4. Step 4: Simplify right side
    13,846.20x = 196,270,614.54
  5. Step 5: Solve for x
    x = 196,270,614.54/13,846.20
  6. Step 6: Final answer
    x = 14,175.05

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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.