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Finding the Fourth Proportional to 22,197.68, 30,462.28 and 20,945.60

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Solution

The fourth proportional to 22,197.68, 30,462.28 and 20,945.60 is: 28,744.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,197.68 : 30,462.28 = 20,945.60 : x
  2. Step 2: Convert to fraction form
    22,197.68/30,462.28 = 20,945.60/x
  3. Step 3: Cross multiply
    22,197.68x = 30,462.28 × 20,945.60
  4. Step 4: Simplify right side
    22,197.68x = 638,050,731.97
  5. Step 5: Solve for x
    x = 638,050,731.97/22,197.68
  6. Step 6: Final answer
    x = 28,744.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.