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Finding the Fourth Proportional to 22,040, 30,415.92 and 12,104

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Solution

The fourth proportional to 22,040, 30,415.92 and 12,104 is: 16,703.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,040 : 30,415.92 = 12,104 : x
  2. Step 2: Convert to fraction form
    22,040/30,415.92 = 12,104/x
  3. Step 3: Cross multiply
    22,040x = 30,415.92 × 12,104
  4. Step 4: Simplify right side
    22,040x = 368,154,295.68
  5. Step 5: Solve for x
    x = 368,154,295.68/22,040
  6. Step 6: Final answer
    x = 16,703.92

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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.