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Finding the Fourth Proportional to 30,423.42, 41,983.86 and 16,994.87

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Solution

The fourth proportional to 30,423.42, 41,983.86 and 16,994.87 is: 23,452.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,423.42 : 41,983.86 = 16,994.87 : x
  2. Step 2: Convert to fraction form
    30,423.42/41,983.86 = 16,994.87/x
  3. Step 3: Cross multiply
    30,423.42x = 41,983.86 × 16,994.87
  4. Step 4: Simplify right side
    30,423.42x = 713,510,032.88
  5. Step 5: Solve for x
    x = 713,510,032.88/30,423.42
  6. Step 6: Final answer
    x = 23,452.66

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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.