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Finding the Fourth Proportional to 22,055, 30,435.90 and 12,119

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Solution

The fourth proportional to 22,055, 30,435.90 and 12,119 is: 16,724.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,055 : 30,435.90 = 12,119 : x
  2. Step 2: Convert to fraction form
    22,055/30,435.90 = 12,119/x
  3. Step 3: Cross multiply
    22,055x = 30,435.90 × 12,119
  4. Step 4: Simplify right side
    22,055x = 368,852,672.10
  5. Step 5: Solve for x
    x = 368,852,672.10/22,055
  6. Step 6: Final answer
    x = 16,724.22

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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.