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Finding the Fourth Proportional to 13,913.01, 20,844.41 and 9,221.90

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Solution

The fourth proportional to 13,913.01, 20,844.41 and 9,221.90 is: 13,816.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.01 : 20,844.41 = 9,221.90 : x
  2. Step 2: Convert to fraction form
    13,913.01/20,844.41 = 9,221.90/x
  3. Step 3: Cross multiply
    13,913.01x = 20,844.41 × 9,221.90
  4. Step 4: Simplify right side
    13,913.01x = 192,224,914.25
  5. Step 5: Solve for x
    x = 192,224,914.25/13,913.01
  6. Step 6: Final answer
    x = 13,816.20

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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.