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Finding the Fourth Proportional to 30,605.63, 42,234.50 and 17,177.99

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Solution

The fourth proportional to 30,605.63, 42,234.50 and 17,177.99 is: 23,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,605.63 : 42,234.50 = 17,177.99 : x
  2. Step 2: Convert to fraction form
    30,605.63/42,234.50 = 17,177.99/x
  3. Step 3: Cross multiply
    30,605.63x = 42,234.50 × 17,177.99
  4. Step 4: Simplify right side
    30,605.63x = 725,503,732.77
  5. Step 5: Solve for x
    x = 725,503,732.77/30,605.63
  6. Step 6: Final answer
    x = 23,704.91

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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.