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Finding the Fourth Proportional to 22,029.94, 30,401.40 and 11,958.40

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Solution

The fourth proportional to 22,029.94, 30,401.40 and 11,958.40 is: 16,502.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,029.94 : 30,401.40 = 11,958.40 : x
  2. Step 2: Convert to fraction form
    22,029.94/30,401.40 = 11,958.40/x
  3. Step 3: Cross multiply
    22,029.94x = 30,401.40 × 11,958.40
  4. Step 4: Simplify right side
    22,029.94x = 363,552,101.76
  5. Step 5: Solve for x
    x = 363,552,101.76/22,029.94
  6. Step 6: Final answer
    x = 16,502.64

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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.