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Finding the Fourth Proportional to 22,394.88, 30,909.60 and 13,442.76

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Solution

The fourth proportional to 22,394.88, 30,909.60 and 13,442.76 is: 18,553.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,394.88 : 30,909.60 = 13,442.76 : x
  2. Step 2: Convert to fraction form
    22,394.88/30,909.60 = 13,442.76/x
  3. Step 3: Cross multiply
    22,394.88x = 30,909.60 × 13,442.76
  4. Step 4: Simplify right side
    22,394.88x = 415,510,334.50
  5. Step 5: Solve for x
    x = 415,510,334.50/22,394.88
  6. Step 6: Final answer
    x = 18,553.81

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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.