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Finding the Fourth Proportional to 22,125.89, 30,533.72 and 12,189.89

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Solution

The fourth proportional to 22,125.89, 30,533.72 and 12,189.89 is: 16,822.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,125.89 : 30,533.72 = 12,189.89 : x
  2. Step 2: Convert to fraction form
    22,125.89/30,533.72 = 12,189.89/x
  3. Step 3: Cross multiply
    22,125.89x = 30,533.72 × 12,189.89
  4. Step 4: Simplify right side
    22,125.89x = 372,202,627.14
  5. Step 5: Solve for x
    x = 372,202,627.14/22,125.89
  6. Step 6: Final answer
    x = 16,822.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.