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Finding the Fourth Proportional to 30,401.82, 41,953.70 and 16,972.70

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Solution

The fourth proportional to 30,401.82, 41,953.70 and 16,972.70 is: 23,421.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,401.82 : 41,953.70 = 16,972.70 : x
  2. Step 2: Convert to fraction form
    30,401.82/41,953.70 = 16,972.70/x
  3. Step 3: Cross multiply
    30,401.82x = 41,953.70 × 16,972.70
  4. Step 4: Simplify right side
    30,401.82x = 712,067,269.36
  5. Step 5: Solve for x
    x = 712,067,269.36/30,401.82
  6. Step 6: Final answer
    x = 23,421.86

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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.